Question

Which of the following configuration is not possible as per the Bohr’s model of an atom?
(A) 2, 5
(B) 2, 8, 8
(C) 2, 7, 3
(D) 2, 8, 2

Answer 1

Dear Student,

◆ Answer -

(C) 2, 7, 3

● Explanation -

• According to Bohr's model of atom, each shell can occupy maximum of 2n² electrons and electrons are added to next shell when previous shell fills completely.
• In example (C), electrons are added to 3rd shell without filling 2nd shell completely. (2nd shell should have 8 electrons not 7). Hence, that electronic configuration is not possible.

Thanks dear...