Chemistry WAEC

What is the electronic configuration of an element represented as 19 9X?

A. 1s² 2s² 2p5
B. 1s² 2s² 3s² 3p³
C. 1s² 2s² 2p³ 3s²
D. 1s² 2s² 2p6 3s² 3p6 4s¹

Correct Answer:

Option A – 1s² 2s² 2p5

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5 years ago

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