Q115
Which one among the following has valency of 3 ?
- (a) Carbon
- (b) Oxygen
- (c) Nitrogen
- (d) Sodium
NDA 2 2024 GAT, question 115
Solution.
Answer: (c) Nitrogen
- Nitrogen commonly has valency 3, as in NH₃.
- In the standard elementary comparison, carbon has valency 4, oxygen 2, and sodium 1.