Redox and Equivalent ConceptHard
Question
The equivalent weights of an element of variable valency are 21 and 14. The atomic mass of the element may be
Options
A.35
B.42
C.70
D.126
Solution
$E = \frac{A}{V} \Rightarrow A = 21V_{1} = 14V_{2}$
As V1 and V2 must be integer, A should be 42, 84, 126, etc.
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