Question

Find the average atomic mass of an element X if the element is available in its two isotopic forms X^23 (80%)

and X^25 (20%).​

Answer 1

Answer:

Average atomic mass = 100

∑% abundance × A.M

20.18= 100

20×90+x×21+(10−x)22

2018=1800+21x+220−22x

x=2020−2018

x=2%

Explanation:

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