Question

An atom X has electronic config 2, 8, 7 . It combines with Y having 1 valence electron. What is the formula of the compound formed?

Answer 1

Hey pal_

Electronic configuration of X : 2 8 7

at no = no of electrons or protons = 17

=> at no : 17 ( chlorine)

Y : 1 valence electron

They combine in the ratio 1:1 i.e, XY

The formula of the compound is XY