Question

For an element X it is given that atomic number = 17 and mass number equal 35 write the electronic electron configuration of element X find valency what will be the formula of compound formed between X and Y having valency 3.

Answer 1

Electronic configuration of Cl = 2,8,7

Valency of Cl = -1

Step-by-step explanation:

Given,

The atomic number of X = 17

Element with atomic number 17 = Chlorine(Cl)

The mass number of element = 35

Electronic configuration of Cl = 2,8,7

Valency of Cl = -1