Question

A neutral atom of an element X has 19 electrons. What will be the electronic configuration?
(A) 2,8,9
(B) 2,9,6,2
(C) 2,8,2,2
(D) 2,8,8,1​

Answer 1

Answer:

2,8,9 will be the electronic configuration

hope it helps :)

Answer 2

Answer:

answer is D

Explanation:

Total electrons here are 19

we know that,each Valence orbit except the first orbit have 8 electrons to fulfil their orbit.

so electrons here are 19 which is equal to 2+8+8+1.

thank you,

I hope that it was helpful!