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In a periodic table the average atomic m...

In a periodic table the average atomic mass of magnesium is given as` 24.312u`. The average value is based on their relative natural abundance on earth. The three isotopes and their masses are `"_12 ^24 Mg (23.98504u)`, `"_12 ^25 Mg(24.98584u)`and `"_12 ^26 Mg (25.98259u)`. The natural abundance of `"_12 ^24 Mg` is 78.99% by mass . Calculate the abundance of the other two isotopes.

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In a periodic table the average atomic mass of magnesium is given as 24.312 u. The average value is based on their relative natural abundance on earth.The three sotopes and their masses are '' - 12^24 Mg (23.98504 u), ''_12^25 12Mg(24.98584 u) and "_12^26 Mg (25.98259 u) . The natural abundance of ''_12^24Mg is 78.99% by mass. Calculate the abundances of other two isotopes.

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