What is the valency of an element of which the equivalent weight is 12 and the specific heat is 0.25?
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a
1
b
2
c
3
d
4
answer is B.
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Detailed Solution
Specific heat x Atomic weight =6.4 (Dulong and Petit law)Atomic weight = 6.4specif heat=6.40.25Atomic weight= Ew x valency = 25.6Valency = Atomic weight Ew =25.612=2(Valency is always a whole number)