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Which of the following ions has the electron configuratio...

Which of the following ions has the electron configuration 2,8,8?

A.

Na+

B.

Mg2+

C.

F-

D.

CI-

View answer & explanation

Correct answer is D

Chlorine(Cl) has configuration 2,8,7 but Chlorine ion (Cl-) has 18 electrons and configuration 2,8,8.

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