An elements has three isotopes `X^(20), X^(21)` and `X^(22)`.
Channel: Doubtnut
Date: 2020-01-28

An elements has three isotopes `X^(20), X^(21)` and `X^(22)`. Percentage abundance (mole %) of `X^(20)` is 90 and average atomic mass of X is `20.18`. Select correct option (s) -