Question

How many valence electrons are in an o-2 ion?

Answer 1

8
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Answer 2

8

Step-by-step explanation:

This is purely dependent on the atomic number and the electronic configuration of the atom. Oxygen lies in the group XVI and period II. There are six valence electrons in the valence shell in the oxygen atom. While in O2−, the number of valence electrons in the outermost shell is 8.