Question

2.) What is the number of volence,
electrone in ( Sodium ion Na+
(i) oxide ion (0-2) ?​

Answer 1

Explanation:

Now the electron configuration of Na+ is 2, 8. Hence, the valence electrons are 8. Now the electron configuration of O2- is 2, 8. Hence, the valence electrons are 8.

Answer 2

The electronic configuration is 2 , 8. Therefore, the number of valence electrons in sodium ion is 8. In O2- ion, there will be 10 electrons, as it has gained two electrons.