Question

If the ratio by number of constituent elements in a

molecule of ammonia is 1 : 3, then the ratio by

mass of constituent element respectively is

(1) 12 : 3 (2) 3 : 4

(3) 14 : 3 (4) 15 : 13

step by step explanation ​

Answer 1

Answer:

The chemical formula of ammonia is NH3. Atomic mass of nitrogen is 14 and of hydrogen is 1×3=3 units.

N:H×3

14:1×3

14:3

Hence the correct option is A.

Answer 2

Answer:

14:3

hence the correct answer is option (3)