Question Detail

CHM 101 Atoms and Atomic Theory Objective Question
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Question

Which of the following compounds contains a polyatomic ion with a charge of -2?
Options
A NaOH
B NH4Cl
C Na2SO4
Correct Answer
D KNO3
Correct Answer

Option C is the correct answer.

Detailed Explanation

Na2SO4 (sodium sulfate) contains the sulfate ion, SO42-, which has a charge of -2. NaOH contains OH- (-1), NH4Cl contains NH4+ (+1), and KNO3 contains NO3- (-1).

Hint

Identify the polyatomic ion in each compound and recall its common charge.

Question Info

Course: CHM 101
Topic: Atoms and Atomic Theory
Type: Objective
Difficulty: Not specified
Question 1493 of 1872
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