Question Detail

CHM 101 Quantum Theory and Atomic Structure Objective Question
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Question

What is the electron configuration of the Cu²⁺ ion?
Options
A [Ar] 3d⁹
Correct Answer
B [Ar] 3d¹⁰
C [Ar] 3d⁸ 4s¹
D [Ar] 3d⁹ 4s¹
Correct Answer

Option A is the correct answer.

Detailed Explanation

Copper atom (Cu) has the configuration [Ar] 3d¹⁰ 4s¹. To form Cu²⁺, the atom loses two electrons. The first electron is removed from the 4s orbital, and the second electron is removed from the 3d orbital, resulting in the configuration [Ar] 3d⁹.

Hint

Cu²⁺ is the more common copper ion, formed by removing the 4s electron and one 3d electron.

Question Info

Course: CHM 101
Topic: Quantum Theory and Atomic Structure
Type: Objective
Difficulty: Not specified
Question 1530 of 1872
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