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

What is the valency of an element of which the eqivalent 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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