Question

3. Which of the following is an example of a polyatomic ion?

a. NO
b. OP-
C. CI
d. Ca²+​

Answer 1

Answer: B

Step-by-step explanation:

A polyatomic ion needs to have two atoms, hence the word “poly,” so D and C are NOT correct. An ion also needs to be charged, so that makes B the correct answer.

Answer 2

Answer:D

Explanation:polyatomic means more then one and it have more then 1 positive ion