Question

72. An element X combines with oxygen to form an oxide XO. This oxide is
electrically conducting, Write the formula of the compound formed when
X reactswith chlorine

@ xcl3
b xcl
c xcl2
d xcl5​

Answer 1

Answer:

c) XCl2

Explanation:

X IS A DIVALENT ATOM

Oxygen has the valency of 2-

the oxide formed by x is XO

THEN X HAS A VALENCY OF 2+

SO WHEN IT REACTS WITH CHLORINE WHICH IS MONOVALENT ATOM IT FORMS XCl2 AS Cl HAS VALENCY 1-.