Neco Model Questions Vol1 2021 Chemistry Question 33

Practice objective / multiple choice question 33 from the 2021 Neco Model Questions Vol1 Chemistry examination.

Neco Model Questions Vol1 2021 Chemistry Objective / Multiple Choice Easy Difficulty
Question 33 NECO_MODEL_QUESTIONS_VOL1 • 2021 • CHEMISTRY • objective
Neco Model Questions Vol1 2021 Chemistry Question 33 diagram

The diagram shows a neutral iron (Fe) atom. Using the diagram, write the ground‑state electron configuration of Fe, state the number of unpaired electrons, and give the most common oxidation state of Fe in its compounds.

Answer Options

A. Electron configuration: [Ar] 3d⁵ 4s²; unpaired electrons: 5; common oxidation state: +3
B. Electron configuration: [Ar] 3d⁷ 4s²; unpaired electrons: 3; common oxidation state: +2
Correct Answer C. Electron configuration: [Ar] 3d⁶ 4s²; unpaired electrons: 4; common oxidation state: +2
D. Electron configuration: [Ar] 3d⁶ 4s¹; unpaired electrons: 5; common oxidation state: +1
Correct Answer
C
Correct Option:
Electron configuration: [Ar] 3d⁶ 4s²; unpaired electrons: 4; common oxidation state: +2

About This Question

This is Neco Model Questions Vol1 2021 Chemistry Question 33. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Chemistry examination.

Difficulty level: Easy .

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