Post Utme Aaua 2020 Chemistry Question 38

Practice objective / multiple choice question 38 from the 2020 Post Utme Aaua Chemistry examination.

Post Utme Aaua 2020 Chemistry Objective / Multiple Choice

Question 38 POST_UTME_AAUA • 2020 • CHEMISTRY • objective

The atomic radius of a certain element is 100 pm. If the element has an atomic number of 20, what is the expected electron configuration?

Correct Answer A. 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10

B. 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^8

C. 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6

D. 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^8 4p^6

Correct Answer

Correct Option:

1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10

This is Post Utme Aaua 2020 Chemistry Question 38. It is one of the objective questions from the 2020 Post Utme Aaua Chemistry examination.

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