How many zeros in a trillion. 4 k References: zeros | How Many Zeros Are in a Million, Billion, and Trillion?We would like to show you a description here but the site won’t allow us. How many zeros in a trillion

 
4 k References: zeros | How Many Zeros Are in a Million, Billion, and Trillion?We would like to show you a description here but the site won’t allow usHow many zeros in a trillion  To find the number of zeros in 3

How Many Zeros in Million ,Billion, Trillion, Quadrillion, Sextillion, Vigintillion, Centillion. If you use the long scale one billion is written with a one. 10 100. Thus, we get: Zeros in 5. It takes about 32,000 years to finish 1 trillion seconds. Click To Tweet How many Zeros in Six Trillion? 6 trillion in figures equals 6000000000000, or 6,000,000,000,000 when written by thousand separators, which makes it easier to count the occurrences of 0. According to the long scale, on the other hand, the trillion was considered the power of a million. 8 trillion 251 million 42. Short scale vs long scale. 4 million you just need to multiply the number by 1,000,000 to get 3,400,000. 1 trillion 74 million 89000 thousand 1. 10 12 = 1,000,000,000,000 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 = 1,000,000,000,000 Billions . 4 trillion 328. By counting the number of zeros in 200 you will find that it has 2 zeros. 1 000 000 000 000 000= quadrillion. How many zeros in 200 trillion? 14. 1 million = 1000 thousands. Click To Tweet How many Zeros in One Trillion? 1 trillion in figures equals 1000000000000, or 1,000,000,000,000 when written by thousand separators, which makes it easier to count the occurrences of 0. We know that one trillion has 12 zeros. It has 9 zeroes after the 1. Simply the Best App to Count Zeros! Please ReTweet. There are about 17 or 18 zeros . 1,000,000. Short scale vs long scale. This is the so also called short scale. There is also a long scale, nowadays used in France, in which a billion means one million million. How Many Zeroes in a Trillion? The next period is a trillion. How many zeros does 2. If you use the long scale one billion is written with a one. This is now the. The next named number after trillion is quadrillion, which is a 1 with 15 zeros after it: 1,000,000,000,000,000. We know that one billion has 9 zeros. 2 trillion References: zeros | How Many Zeros Are in a Million, Billion, and Trillion?50. Name Number of Zeros Groups of (3) Zeros Ten 1 (10. There are 4 sets of zeros (each set has three zeros) and this is also shown as 1 x 1012. The next named number after trillion is quadrillion, which is a 1 with 15 zeros after it: 1,000,000,000,000,000. This is the so also called short scale. The little. An easy way of recognising it is that a trillion has 12 zeros, or another way of looking at it is it’s a million million. List of Large Numbers. (100000000) How many zeros are in a one Billion? There are nine zeros in one Billion. According to the short scale 1, there are twelve zeroes in one trillion (1,000,000,000,000) According to the long scale 2 , there are eighteen zeroes in one. How many zeros are in a: Million – 6 zeros. 7 trillion 818k 435k References: zeros | How Many Zeros Are in a Million, Billion, and Trillion?230 trillion in figures equals 230000000000000, or 230,000,000,000,000 when written by thousand separators, which makes it easier to count the occurrences of 0. By grouping the zeros into three, you can see the difference between hundreds, thousands, and. Trillion is a 1 with 12 zeros after it, and it looks like this: 1,000,000,000,000. Short scale vs long scale. For example, in 20400, there are 2 zeroes after the last non-zero digit of the number, 4. 5 million 494 billion 92. 8 million References: zeros | How Many Zeros Are in a Million, Billion, and Trillion?Short scale vs long scale. Question : How Many Zeros in a Ten ? Answer : There are 1 zero in Ten. One million is shown as the numeric, followed by 6 zeroes. A million has 6 zeroes, and a trillion has 12 zeroes. 8 trillion 8 billion 391 billion 971 billion 53. 2 k 293 billion 26. To write 100 trillion in numbers first delete the name “trillion”, then multiply 100 by 10 12. In the United States—as well as around the world in science and finance—a billion is 1,000 million, which is written as a one followed by nine zeros. 8 trillion in figures equals 8000000000000, or 8,000,000,000,000 when written by thousand separators, which makes it easier to count the occurrences of 0. ]Short scale vs long scale. ]Trillion. The integer 1000000000000000000000000000000000000000000 (or 10 42, a 1 followed by 42 zeros) is called a Tredecillion. What does 200 trillion mean? It means 200000000000000, 200,000,000,000,000, 20000000 crores or 2000000000 lakhs for example. 9 trillion 984 billion 626 thousand References: zeros | How Many Zeros Are in a Million, Billion, and Trillion?Have ever wondered how many zeroes are in a million? A billion? A trillion? Do you know how many zeros there are in a vigintillion? Somedayyou may need to kn. How many zeros in a billion? A billion has nine zeros. 3 thousand 73. How many zeros in a trillion? A trillion has 12. To find the number of zeros in 140 million you just need to multiply the number by 1,000,000 to get 140,000,000. 9k 81. Decillion has 33 zeros. 3. After 999 thousand comes one million. 11 is the answer to 5. In the United States, as in most countries, a billion corresponds to one thousand million, which is written as a one followed by nine zeros. One trillion is equal to 1,000,000,000,000 and one. How many sets of zeros are in a trillion? As another example, it’s much easier to remember that a trillion is written with four sets of three zeros than it is to count out 12 separate zeroes. We know that one million has 6 zeros. trillion: 1 with 12 zeros: 1 with 18 zeros: quadrillion: 1 with 15 zeros: 1 with 24 zeros: quintillion: 1 with 18 zeros: 1 with 30 zeros: sextillion: 1 with 21 zeros: 1 with 36 zeros: septillion: 1 with 24 zeros: 1 with 42 zeros: octillion: 1 with 27 zeros: 1 with 48 zeros: googol How many zeros in a trillion? Flexi Says: The number of zeros in a million, billion and trillion are as follows. Billion has 9 zeros. By multiplying the value given in trillion by 1000, we can convert trillion to billion. The short scale is used in the US, while the long scale is still employed for some uses in the UK, and elsewhere. The next order of magnitude is. Googol. In an exponent form, a quintillion is simply $10^{18}$ or 10 raised to the power of 18. This is the so also called short scale. In mathematical notation, it would be 1×10^9. You can categorize it into groups of three zeros or into groups of. )How Many Zeros Are There In One Trillion? Mathematics. Click To Tweet How many Zeros in Twenty-Three Trillion? 23 trillion in figures equals 23000000000000, or 23,000,000,000,000 when written by thousand separators, which makes it easier to count the occurrences of 0. 6 trillion So the first is larger by 0. 41. 3k 337 million 30. 58 million 94. To find the number of zeros in 330 million you just need to multiply the number by 1,000,000 to get 330,000,000. How many zeros does the number trillion have in it? The number 1 trillion has 12 zeroes . In the US, there are 12, excluding the 2 zeroes past the decimal. There is also a long scale, nowadays used in France, in which a billion means one million million. Nmn 26. Counting the 0s in 200,000,000,000,000 is the easiest way to figure it out. There are six zeros after 1000. 911 trillion in figures equals 911000000000000, or 911,000,000,000,000 when written by thousand separators, which makes it easier to count the occurrences of 0. There is also a long scale, nowadays used in France, in which a billion means one million million. How many zeros are there in all numbers, ten, hundred, fifty hundred, million, billion, trillion, quadrillion, sextillion, septillion, octillion, nonillion,. AdvertisementDetails. 1. We know that one million has 6 zeros. 25 da) = 3. There is also a long scale, nowadays used in France, in which a billion means one million million. 31 → 310 → 3,100 → 31,000 → 310,000 → 3,100,000 → 31,000,000 → 310,000,000 → 3,100,000,000. Click To Tweet How many Zeros in Two Hundred And Forty-Eight Trillion? 248 trillion in figures equals 248000000000000, or 248,000,000,000,000 when written by thousand separators, which makes it easier to count the occurrences of 0. A trillion is the same as one million million. Duotrigintillion. Click To Tweet How many Zeros in Six Trillion? 6 trillion in figures equals 6000000000000, or 6,000,000,000,000 when written by thousand separators, which makes it easier to count the occurrences of 0. 6 trillion 85. 1 trillion 572 billion 55. 3 trillion in figures equals 87300000000000, or 87,300,000,000,000 when written by thousand separators, which makes it easier to count the occurrences of 0. 5 zeros: Million: 1,000,000: 6 zeros: Billion: 1,000,000,000: 9 zeros: Trillion: 1,000,000,000,000: 12 zeros: Quadrillion: 1,000,000,000,000,000: 15 zeros: Quintillion:. 6 k References: zeros | How Many Zeros Are in a Million, Billion, and Trillion?Question : How Many Zeros in a Trillion ? Answer : There are 12 zeros in Trillion. If you use the long scale one billion is written with a one. 4. 9 billion (1 trillion / 1000 billion) 1. Short scale vs long scale. Timeline How many 0s in a trillion? Answer: One trillion has 12 zeros in short scale notation: 1 trillion = 1,000,000,000,000. There are, of course, many numbers between trillion and quadrillion, but it isn't until quadrillion that that number value actually gets a new name. 0. 230 → 2,300 → 23,000 → 230,000 → 2,300,000 → 23,000,000 → 230,000,000. In the United States, as in most countries, a billion corresponds to one thousand million, which is written as a one followed by nine zeros. There is also a long scale, nowadays used in France, in which a billion means one million million. How many zeros are in 1 quadrillion? One quadrillion has sixteen numbers. 9 trillion 27. 1 billion trillion = 1 x 1021. 3k 18. 1 Million added by 62 Ten = 1,000,620. 10002 = 1,000,000 = Million. Now we can count the groups of three: 1- triple zero, 2- triple zero, 3- triple zero. ”. 1 trillion, include, for example:To find the number of zeros in 31 billion you just need to multiply the number by 1,000,000,000 to get 31,000,000,000. 6 How many zeros. According to this definition of a billion, the number is written with a 1 followed by 12 zeros. 3 million 10. 1 million = 1,000,000. one million million , or 10 12 (ten to the twelfth power ), as defined on the short scale . 5 thousand 34. So, basically, there are two ways to convert the millions, billions and trillions in Urdu. A googolplex is a 1 followed by a googol of zeros. There are 15 zeroes in a quadrillion. Short scale vs long scale. Click To Tweet How many Zeros in Six Thousand Point Trillion? 6000 trillion in figures equals 6000000000000000, or 6,000,000,000,000,000 when written by thousand separators, which makes it easier to count the occurrences of 0. 1 million = 1,000,000 (6 zeros) 1 billion/milliard. There is also a "long scale," which is used in France and previously was used in the United. Thus, we get: Zeros in 10 Trillion = 13. Thus, we get: Zeros in 100 Trillion = 14. 65. So, to multiply 1. So, 1 billion is equal to one thousand million. The number 6 trillion trillion (short scale) is 6 x 1024, or 6 septillion, with 24 zeros. So, to multiply 1 by one million you just need to add 6 zeros to the right of 1. There is also a long scale, nowadays used in France, in which a billion means one million million. . 0E+21 septillion: 1. Kingdom, in which a billion means 1 million million. In the case of 10, since 10 to the zero power is one, it is easier to think of one being divided 10 in the increments shown in the exponent. A billion has nine zeros. 2k 65. 1 by one billion you just need to shift the decimal separator 9 places to the right of 37. 5 trillion in figures equals 1500000000000, or 1,500,000,000,000 when written by thousand separators, which makes it easier to count the occurrences of 0. How many zeros are in one half trillion? 50,000,000,000. Mr. 4 trillion 847k 550 billion 43. How many zeros does 100 trillion have? When we count zeros in 100 trillion above, we see that there are 14 zeros. We would like to show you a description here but the site won’t allow us. If you use the long scale one billion is written with a one. Facts. How many zeros are in 6 trillion? There are 15 zeros in the number 6,000,000,000,000,000 (6 trillion). Short scale vs long scale. 2450 thousand 45. [Note: The values which are greater than a trillion are called Quadrillion (1015)and Quintillion (1018). 5 million 440 trillion 1. By counting the number of zeros in 1,600,000,000 you will find that it. If you use the long scale one billion is written with a one. or. 1,000,000,000,000. 75 Billion?46. 3 trillion 333 billion 45000 thousand 36. 1 million 32. The place value of a billion is always the 10 th digit from the. On the long scale method, a billion= one million million, which is equivalent to 1. Therefore, 1 quadrillion (1000000000000000 ). In the United States, as in most countries, a billion corresponds to one thousand million, which is written as a one followed by nine zeros. One trillion is written as 1,000,000,000,000 or more commonly as {eq}10^{12} {/eq}. Million has 6 zeros; Billion has 9 zeros; Trillion has 12 zeros; Quadrillion has 15 zeros; Quintillion has 18 zeros; Sextillion has 21 zeros; Septillion has 24 zeros; Octillion has 27 zeros; Nonillion has 30 zeros; Decillion has 33 zeros; Undecillion has 36 zeros; Duodecillion has 39 zeros; Tredecillion has 42 zeros; Quattuordecillion has 45. The short scale is used in the US, while the long scale is still in use in some countries. 2 trillion 247. There is also a long scale, nowadays used in France, in which a billion means one million million. We know that one k has 3 zeros. In the United States, as in most countries, a billion corresponds to one thousand million, which is written as a one followed by nine zeros. 0E+30 quadrillion: 1. The number 6 trillion trillion can represent two different numbers, because there are two scales in use. 3 trillion 333 billion 45000 thousand 36. 1 trillion consists of 1 followed by 12 zeros, that is, 1, 000, 000,000, 000 and can be written as \(10^{12} \) (ten to the twelfth power). 67. An SI prefix is a prefix used to multiply a unit. This is also called the "short scale. Thus, we get: Zeros in 5 Trillion = 12. How many zeros does a. 14 is the answer to 500 trillion has how many zeros?Simply the Best App to Count Zeros! Please ReTweet. The web page explains how to figure out how. com)Thus, one GigaTrillion is 1 Billion-Trillion. 6 k 96. set of three zeros, starting at the end and working back towards the ' 1 '. 375 → 3,750 → 37,500 → 375,000 → 3,750,000 → 37,500,000 → 375,000,000. Thus, we get: Zeros in 230 Trillion = 13. 4k 31 k References: zeros | How Many Zeros Are in a Million, Billion, and Trillion?Simply the Best App to Count Zeros! Please ReTweet. We know that one million has 6 zeros. 5 Trillion = 11. Simply the Best App to Count Zeros! Please ReTweet. 7 trillion 37. It is 1 x 1012. This is the so also called short scale. Trillion is a 1 with 12 zeros after it, and it looks like this: 1,000,000,000,000. & scientific community Other countries 3 thousand thousand 6 million million 9 billion 1000 million (1 milliard) 12. 20795107. 11 is the answer to 1. How many zeros do we need to type down to determine the value of a trillion? Well, we advise you not to write it as 1000000000000. So there are 12 zeros in a trillion. Unfortantely, it's not that easy because there are two "number. 4k 39. Simply the Best App to Count Zeros! Please ReTweet. If you want to write 100 trillion in words, then it will be written as `one hundred trillion` Therefore, 100 trillion. This is the so also called short scale. 073 Billion KiloBytes in a TerraByte (TB). Details. one million billion trillion is the sum of those, or 6+9+12 = 27 zeroes1. This means that a billion has nine zeros. A trillion is. Short scale vs long scale. As we discussed in the definition of a trillion, one trillion is written as 1,000,000,000,000 in the International number system. 9 thousand 233 million 52. 7 billion 79. It is 186,000 times 10 to the 5th , times 60 , times 24. So, to multiply 400 by one thousand you just need to add 3 zeros to the right of 400. 5 thousand References: zeros | How Many Zeros Are in a Million, Billion, and Trillion?To find the number of zeros in 400 thousand you just need to multiply the number by 1,000 to get 400,000. 4 trillion has how many zeros? One trillion is written as 1,000,000,000,000 in which the number “1” is followed by 12 zeros. The same ambiguity exists as to trillion (to Americans, a thousand thousand millions, or 10 to the 12th; to the British, a million million millions, or 10 to the 18th) and quadrillion (to. 5 billion 3. 120 → 1,200 → 12,000 → 120,000 → 1,200,000 → 12,000,000 → 120,000,000. It's important to note that the prefix. 1k 10 billion 36 billion 22. Septillion has 24 zeros. 2k 308 thousand References: zeros | How Many Zeros Are in a Million, Billion, and Trillion? 500 trillion in figures equals 500000000000000, or 500,000,000,000,000 when written by thousand separators, which makes it easier to count the occurrences of 0. 1 000 000 000 000 000 000= quintillion. It has 12 zeros after the 1. Undecillion has 36 zeros. Click To Tweet How many Zeros in Five Thousand Point Trillion? 5000 trillion in figures equals 5000000000000000, or 5,000,000,000,000,000 when written by thousand separators, which makes it easier to count the occurrences of 0. [Note: The values which are greater than a trillion are called Quadrillion (1015)and Quintillion (1018). In this case, a billion has nine zeros. So, to multiply 3. Other nations have a more logical approach to naming numbers, concluding that bi- (or 2) indicates that one billion should have twice as many zeros as one million, and one trillion (tri. 3 thousand 379 billion 2520 thousand 87. There is also a long scale, nowadays used in France, in which a billion means one million million. Googol. Sir is there quantrillion or any other number more than billion in international system. If you use the long scale one billion is written with a one. The larger the number, the more zeros it has. 5. , one trillion is written as the number "1" followed by 12 zeros (1,000,000,000,000). Question : How Many Zeros in a Million ? Answer : There are 6 zeros in Million. 7k 724 million 5 quintillion 2. 9 by one billion you just need to shift the decimal separator 9 places to the right of 3. Now, take a look at 1 billion. So, to multiply 375 by one million you just need to add 6 zeros to the right of 375. Traditional British usage assigned new names for each power of one million (the long scale ): 1,000,000 = 1 million; 1,000,0002 = 1 billion; 1,000,0003 = 1 trillion; and so on. It’s simpler to write it one trillion as 1,000,000,000,000. Question : How Many Zeros in a Billion ?. What Does Trillion Mean in Math? A trillion is a number which is written as 1 followed by 12 zeroes. 1 → 371 → 3,710 → 37,100 → 371,000 → 3,710,000 → 37,100,000. Quadrillion – 15 zeros. Starting with 1,000, there are a large number of groups of 0’s. 8 trillion 92. A million has 6 zeros: 1,000,000. 1 million 2 sets of 1000. This helps in simplifying the figures. You need to write the group of three zeros three times to get the number. Remember the tricks that we have discussed:Details. Please. By counting the number of zeros in 3,600,000,000 you will find that it has 8 zeros. one million million, or 10 12 (ten to the twelfth power ), as defined on the short scale. 7 trillion 52. See the table of all numbers with zeros and their groups, and the difference between billion and trillion. How many zeros are there in all numbers, million, billion, trillion, quadrillion, sextillion, septillion, octillion, nonillion, decillion, undecillion, duode. How many numbers are in 1 trillion? According to the short scale 1, there are twelve zeroes in one trillion (1,000,000,000,000) According to the long scale 2, there are eighteen zeroes in one trillion (1,000,000,000,000,000,000) Differences between these two scales start from a billion, because lower numbers are all the same in them (a. A trillion is 10^12 or 1,000,000,000. Thus, we get: Zeros in 1. 1 trillion consists of 1 followed by 12 zeros, that is, 1, 000, 000,000, 000 and can be written as 1012 (ten to the twelfth power). Examples: • our Milky Way Galaxy is about a quintillion meters wide • the volume of Earth's oceans is 1. 6 k 85. 11. Simply the Best App to Count Zeros! Please ReTweet. Nonillion has 30 zeros. 1 000 000 000 000 000= quadrillion. One trillion seconds of ordinary clock time =. e. it has been estimated that a $1 trillion worth of one dollar bills. 7 trillion 3. Divide the number 1. This is the so also called short scale. 6 trillion 261000 million 36. There is also a long scale, nowadays used in France, in which a billion means one million million. How many Zeros in Five Trillion? 5 trillion in figures equals 5000000000000, or 5,000,000,000,000 when written by thousand separators, which makes it easier to count the occurrences of 0. Thus, we get: Zeros in 5 Trillion = 12. Zeros Ten 1 (10) Hundred 2 (100) Thousand 3 1 (1,000) Ten thousand 4 (10,000) Hundred thousand 5 (100,000) Million 6 2 (1,000,000) Billion 9 3 (1,000,000,000) Trillion 12 4 (1,000,000,000,000) Quadrillion 15 5 Quintillion 18 6 Sextillion 21 7 Septillion 24 8 Octillion 27 9 Nonillion 30 10 Decillion 33 11 Undecillion 36 12 Duodecillion 39 13How Many Zeros Are in a Billion? There are nine zeros in a billion, so in digits, it would be written like 1,000,000,000. 1 Trillion = 11. A trillion is a 1 with 12 zeros after it, represented as 1,000,000,000,000 or 10¹². According to this definition of a billion, the number is written with a 1 followed by 12 zeros. This is the so also. 2 thousand 27. Thus, we get: Zeros in 500 Trillion = 14. 6 billion 1000 thousand 894 billion 83 ten 959. This is the so also called short scale. 5 thousand 19. 6 million 39. 7 billion 8. To find the number of zeros in 3. 5 trillion in figures equals 1500000000000, or 1,500,000,000,000 when written by thousand separators, which makes it easier to count the occurrences of 0. FULTON . So, to multiply 8 by one million you just need to add 6 zeros to the right of 8. It takes about 32,000 years to finish 1 trillion seconds. 5 billion have? When we count zeros in 3. 5 billion 39. Similarly, there are six zeros in a million. 13 zeros in 10 trillion. How many zero is a quadrillion? 15 zeros We can define a quadrillion as 1 with 15 zeros after it. Mathematically and scientifically, a billion can be written as (10) 9 too. 4k 29. By counting the number of zeros in 400,000 you will find that it has 5 zeros. It is used to represent huge quantities. 9k References: zeros | How Many Zeros Are in a Million, Billion, and Trillion?41. Numbers of Zeros with Example Hide / Show. Simply the Best App to Count Zeros! Please ReTweet. How many billions in one trillion? There are 1000 (one thousand) billions in one trillion according to the American numbering system. FAQs. In some short scale countries, milliard was defined to 10 9 and billion dropped altogether, with trillion redefined down to 10 12 and so on for the larger numbers. 4 trillion 328. G. 2 trillion in figures equals 37200000000000, or 37,200,000,000,000 when written by thousand separators, which makes it easier to count the occurrences of 0. A billion signifies an even more massive quantity compared to a million. Duotrigintillion. How many zeroes for Million Billion Trillion? a million has 6 zeroes, a billion 9, and a trillion 12. Simply the Best App to Count Zeros! Please ReTweet. However, in some other countries, such as France and Germany, a billion is defined as 1,000,000,000,000, or 10^12. Study with Quizlet and memorize flashcards containing terms like How many zeroes in a million, How many zeroes in a trillion, How many zeroes in a billion and more. After billion, of course, is trillion. 23. While you might think that that one is pretty simple, just wait until you have to count 27 zeros for an octillion or 303 zeros for a centillion. Kingdom, in which a billion means 1 million million. 7 trillion 37. One billion has nine zeros. A googolplex is a 1 followed by a googol of zeros. Click To Tweet How many Zeros in Three Hundred Trillion? 300 trillion in figures equals 300000000000000, or 300,000,000,000,000 when written by thousand separators, which makes it easier to count the occurrences of 0. 20 → 200. S. So, we can convert a trillion to a million by multiplying the value given in a trillion by 1000000. 3 trillion 3900 billion 80. e. Click To Tweet How many Zeros in One Point Two Trillion? 1. So, to multiply 7. Trigintillion, often cited as a word in discussions of names of large numbers, is not included in any of them, nor are any of the names that can easily be created by extending the. 5 million 29 trillion 221000 million 46. 9 trillion in figures equals 227900000000000, or 227,900,000,000,000 when written by thousand separators, which makes it easier to count the occurrences of 0. Simply the Best App to Count Zeros! Please ReTweet. I think you mean "sextillion". 2. To convert a trillion to a billion, use the following formula: 1 trillion = 1000 billion. 14 is the answer to 500 trillion has how many zeros? Simply the Best App to Count Zeros! Please ReTweet. One lakh crore (13 zeroes) & so on. Click To Tweet How many Zeros in Thirty-Six Trillion? 36 trillion in figures equals 36000000000000, or 36,000,000,000,000 when written by thousand separators, which makes it easier to count the occurrences of 0. 2 k 88. There is also a long scale, nowadays used in France, in which a billion means one million million. By grouping the zeros into three, you can see the difference between hundreds, thousands, and so on. 9 k 57000 thousand 20. How many zeros in a billion? There are 9 zeroes in one billion.