Question

Which of the following is a polyatomic compound?
A. CO
B. HCN
C. N₂
D. NO₂

Answer 1

Answer:

B. HCN

Explanation:

CN is a polyatomic ion.

Answer 2

D. NO2

Step-by-step explanation:

D. NO₂ is a polyatomic compound. It is made up of two non-metal atoms (nitrogen and oxygen) that are covalently bonded together and exist as a single, charged entity.