Question

3 atoms of metal M combine with 2 atoms of nitrogen to give a compound containing 28%
nitrogen and 72% of metal. What is the atomic weight of metal ?​

Answer 1

Answer:

24

Explanation:

Three atoms of M combine with 2 atoms of N.

Equivalent weight of N=  

3

14

​  

 (valency of N in compound = 3)

28g N combines with 72g metal.

3

14

​  

 N combines =  

28

72

​  

×  

3

14

​  

=12

The equivalent weight of metal =12

Atomic mass of metal = equivalent weight × valency=12×2=24.

Hence, option A is correct.