Question

if the element x has two isotopes with atomic mass 30.1 and 31.9 . then find percentage abundance of each isotope if its average atomic mass is 30.5​

Answer 1

Answer:

2%

Explanation:

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%