Waec Model Questions Vol1 2019 Chemistry Question 27

Practice objective / multiple choice question 27 from the 2019 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2019 Chemistry Objective / Multiple Choice Easy Difficulty
Question 27 WAEC_MODEL_QUESTIONS_VOL1 • 2019 • CHEMISTRY • objective

The diagram shows a Bohr model of an atom with 2 electrons in the K‑shell, 8 electrons in the L‑shell and 5 electrons in the M‑shell. Identify the element and write its ground‑state electron configuration.

Answer Options

A. Silicon; 1s² 2s² 2p⁶ 3s² 3p²
Correct Answer B. Phosphorus; 1s² 2s² 2p⁶ 3s² 3p³
C. Argon; 1s² 2s² 2p⁶ 3s² 3p⁶
D. Sulfur; 1s² 2s² 2p⁶ 3s² 3p⁴
Correct Answer
B
Correct Option:
Phosphorus; 1s² 2s² 2p⁶ 3s² 3p³

About This Question

This is Waec Model Questions Vol1 2019 Chemistry Question 27. It is one of the objective questions from the 2019 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Easy .

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