Atomic weight of an element is 30 its equivalent wt. is 10 The valency of element will be-

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Solution

The correct option is C 3
$V a l e c y = \frac{A t o m i c w e i g h t o f e l e m e n t}{E q u i v a l e n t w e i g h t}$
$= \frac{30}{10} = 3$

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