Question

State the name of the element from the periodic table which forms oxides of formula XO and X2O,where X represent the chemical symbol

Answer 1

Answer:

Valency of O is 2. X forms X

2

O. Hence valency of X is 1. Thus it has 1 electron for outermost shell. Hence it belongs to group IA. When X reacts with chlorine it forms XCl.