Neco 2019 Chemistry Question 12

Practice objective / multiple choice question 12 from the 2019 Neco Chemistry examination.

Neco 2019 Chemistry Objective / Multiple Choice Easy Difficulty

Question 12 NECO • 2019 • CHEMISTRY • objective

Write the ground‑state electron configuration of the element with atomic number 26 and state the number of unpaired electrons in its ground state.

A. [Ar] 4s^1 3d^7 ; 2 unpaired electrons

B. [Ar] 4s^2 3d^6 ; 2 unpaired electrons

C. [Ar] 4s^2 3d^5 ; 3 unpaired electrons

Correct Answer D. [Ar] 4s^2 3d^6 ; 4 unpaired electrons

Correct Answer

Correct Option:

[Ar] 4s^2 3d^6 ; 4 unpaired electrons

This is Neco 2019 Chemistry Question 12. It is one of the objective questions from the 2019 Neco Chemistry examination.

Difficulty level: Easy .

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