Question

1. which electron configuration is correct for a sodium ion? 2-7 2-8-1 2-8-2 2-8 clear all

Explanation:

Sodium (Na) has an atomic number of 11. Its neutral - atom electron configuration is 2 - 8 - 1. A sodium ion (Na⁺) is formed when sodium loses one electron. So, the electron configuration of a sodium ion is 2 - 8.

Answer:

2 - 8