ChemistryStatement (A) : Gold exhibits two valencies 2 and 3.Statement (B) : Tin exhibits two valences 2 and 3.Statement (C) : Mercury exhibits two valences 3 and 4.

Statement (A) : Gold exhibits two valencies 2 and 3.
Statement (B) : Tin exhibits two valences 2 and 3.
Statement (C) : Mercury exhibits two valences 3 and 4.

A
All the above statements are correct
B
All the above statements are incorrect
C
A and B are correct but C is incorrect
D
A and B are incorrect but C is correct

Solution:

The valency of gold (Au) is 1 and 3 of its compounds.

Ex : ${AuCl}_{3}$ and $AuCl$

Tin (Sn) exhibits both 2 and 4 valency in its compounds.

Ex: ${SnCl}_{2}$ and ${SnCl}_{4}$

Mercury (Hg) exhibits both 1 and 2 valencies in its compounds.

Related content

Differences & Comparisons Articles in Chemistry

Magnesium oxide Formula

Barium chloride formula

Benzoic Acid formula

Butane Formula

Magnesium Chloride Formula

Magnesium hydroxide Formula

Nitrite Formula

Phosphoric Acid Formula

Salicylic Acid Formula