Neco Model Questions Vol1 2021 Chemistry Question 24

Practice objective / multiple choice question 24 from the 2021 Neco Model Questions Vol1 Chemistry examination.

Neco Model Questions Vol1 2021 Chemistry Objective / Multiple Choice Easy Difficulty

Question 24 NECO_MODEL_QUESTIONS_VOL1 • 2021 • CHEMISTRY • objective

Chlorine has atomic number \(17\). Write its ground‑state electron configuration using noble‑gas notation and state the number of valence electrons.

Answer Options

Correct Answer A. [Ne] 3s2 3p5; 7 valence electrons

B. [Ne] 3s2 3p4; 6 valence electrons

C. [He] 2s2 2p5; 7 valence electrons

D. [Ne] 3s2 3p6; 8 valence electrons

Correct Answer

Correct Option:

[Ne] 3s2 3p5; 7 valence electrons

About This Question

This is Neco Model Questions Vol1 2021 Chemistry Question 24. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Chemistry examination.

Difficulty level: Easy .

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