Question

Write down the electronic configuration of the following 

1. ²⁷₁₃X,
2. ³⁵₁₇Y.

Write down the number of electrons in X and neutrons in Y and the formula of the compound formed by X and Y.[XY₃]

Answer 1

Electronic configuration of: 

(1) ²⁷₁₃X number of electrons = 13
Distribution of elecrtrons in different ordits
13 = [2, 8, 3]
         K  L  M
Number of neutrons in Y
= A − Z = 35 − 17 = 18

(2) ³⁵₁₇Y number of electrons = 17
Distribution of electrons in different orbits
17 = [2, 8, 7]
         K  L  M

Formula of compound formed is