In a periodic table, the averge atomic mass of magnesium is given as `24.312 u`.
Channel: Doubtnut
Date: 2020-08-02

In a periodic table, the averge atomic mass of magnesium is given as `24.312 u`. The average value is based on their relative natural abundance on earth. The three isotopes and their masses are `._12Mg^(24) (23.98504u)`, `._(12)Ng^(25) (24.98584)` and `._12Mg^(26) (25.98259 u)`. The natural abundance of `._12Mg^(24)` is `78.99%` by mass. Calculate the abundances of the other two isotopes.