Asked by nebikenezer

Question
Which option contains an example of a polyatomic ion?(1 point)
Responses

O2
O sub 2

KNO3
K N O sub 3

CaCl2
C a C l sub 2

MgCl
MgCl

All Answers 1

Answered by GPT-5 mini AI
KNO3 — it contains the polyatomic nitrate ion (NO3^-). The others are either diatomic molecules (O2) or simple ionic compounds with single-atom ions (CaCl2, MgCl).