Question

12 gm of an alkaline earth metal gives 14.8
g of its nitride. The atomic mass of metal is
x×10'; then x+y is​

Answer 1

nswer:Let the metal be M with atomic wt. be x.

So, 3m+N2----->M3N2

3x

3x+28

​  

               

3x+28 A

So,  12 =  14.8    

        3x    (3x+28)

​  

Which in solving for x gives 40.

The metal is calcium and its nitride is Ca3n2

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