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Question

Question: What is the electronic configuration of \(O^{2 -}\)ion?...

What is the electronic configuration of O2O^{2 -}ion?

A

1s22s22p61s^{2}2s^{2}2p^{6}

B

1s22s22p41s^{2}2s^{2}2p^{4}

C

1s22s22p51s^{2}2s^{2}2p^{5}

D

1s22s22p31s^{2}2s^{2}2p^{3}

Answer

1s22s22p61s^{2}2s^{2}2p^{6}

Explanation

Solution

: O2O^{2 -} ion contains 2 electrons more than O. Hence its electronic configuration will be 1s22s22p61s^{2}2s^{2}2p^{6}