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What is the valency of an element of whi...

What is the valency of an element of which the equivalent weight is 12 and the specific heat is 0.25?

A

1

B

2

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
B
Specific heat `xx` Atomic weight = 6.4
(Dulong and Petit law)
`"Atomic weight"=6.4/("specific heat")=6.4/(0.25)`
Atomic weight = Ew `xx` valency = 25.6
`"Valency"=("Atomic weight")/("Ew")=25.6/(12)=2`
(Valency is always a whole number)
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