Question

Write down the electronic configuration
of neon and beryllium, having
atomic no. 10 and u respectively?​

Answer 1

Answer:

Neon:- 2,8

Beryllium:- 2,2

Answer 2

Answer:

Explanation:

Atomic number of Beryllium = 4

Electronic configuration = (2, 2)

Atomic number of Oxygen = 8

Electronic configuration = (2, 6)

Valency of Beryllium is 2,

Valency of Oxygen is = 8 ‒ 6 = 2