Question

WHat is the formula of mercury chloride ??

Please do with criss cross method

class 9 cbse

Answer 1

Hg has two valencies 1 and 2
But merury with valency 2 forms Hg2Cl2

so it will form Hg2Cl2

Answer 2

mecury are found in two type
mercurus and mercuric

mercurus is monovalent so,
Hg Cl
1 1
HgCl ( mercurus chloride )

mercuric is daivalent so ,
Hg Cl
2 1
HgCl2 (mercuric chloride)