Question Detail

CHM 101 Atoms and Atomic Theory Objective Question
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Question

Which of the following statements is true about a polyatomic ion?
Options
A It is an atom that has lost or gained electrons.
B It is a group of atoms of mostly different elements that carries a net charge.
Correct Answer
C It is always composed of a metal and a nonmetal.
D It is a neutral group of atoms that act as a single unit in a reaction.
Correct Answer

Option B is the correct answer.

Detailed Explanation

A polyatomic ion, also known as a molecular ion, is a group of atoms (often of different elements) that are covalently bonded and carry an overall net electrical charge. Examples include NH4+ (ammonium) and SO42- (sulfate).

Hint

Consider the definition of a charged group of covalently bonded atoms.

Question Info

Course: CHM 101
Topic: Atoms and Atomic Theory
Type: Objective
Difficulty: Not specified
Question 1452 of 1872
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