Gce Model Questions Vol1 2017 Chemistry Question 20

Practice objective / multiple choice question 20 from the 2017 Gce Model Questions Vol1 Chemistry examination.

Gce Model Questions Vol1 2017 Chemistry Objective / Multiple Choice Easy Difficulty
Question 20 GCE_MODEL_QUESTIONS_VOL1 • 2017 • CHEMISTRY • objective

Write the ground‑state electron configuration of copper (atomic number 29). Using this configuration, state how many electrons are present in the \(n=3\) shell.

Answer Options

A. [Ar] 3d^{9} 4s^{2}; 18 electrons in n=3
Correct Answer B. [Ar] 3d^{10} 4s^{1}; 18 electrons in n=3
C. [Ar] 3d^{10} 4s^{1}; 20 electrons in n=3
D. [Ar] 3d^{10} 4s^{2}; 18 electrons in n=3
Correct Answer
B
Correct Option:
[Ar] 3d^{10} 4s^{1}; 18 electrons in n=3

About This Question

This is Gce Model Questions Vol1 2017 Chemistry Question 20. It is one of the objective questions from the 2017 Gce Model Questions Vol1 Chemistry examination.

Difficulty level: Easy .

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