Question

a metallic atom having unstable electronic configuration
​

Answer 1

Answer:

Sodium is in group 1 of the periodic table and each atom includes 11 electrons. A single electron is located in the outer 3s shell, which is capable of holding 2 electrons. Since this is an unstable electron configuration, sodium often loses its outer 3s electron, producing a positively charged ion.

Explanation:

Hope it will help you

Jai Hind