Question Detail

CHM 101 Atoms and Atomic Theory Objective Question
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Question

Which of the following groups contains only polyatomic ions?
Options
A Na+, Cl-, Mg2+
B NH4+, SO42-, NO3-
Correct Answer
C K+, Br-, Ca2+
D Fe3+, O2-, Al3+
Correct Answer

Option B is the correct answer.

Detailed Explanation

Polyatomic ions consist of two or more atoms covalently bonded with an overall charge. NH4+ (ammonium), SO42- (sulfate), and NO3- (nitrate) are all polyatomic ions. The other options list monatomic ions (single atoms with charges).

Hint

Check each ion to see if its formula contains more than one element symbol.

Question Info

Course: CHM 101
Topic: Atoms and Atomic Theory
Type: Objective
Difficulty: Not specified
Question 1471 of 1872
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