1.0 g of hydrogen is heated to combine with 80.0 g of bromine and 1.0 g of calcium (valency =2) combines with 4.0 g of bromine.
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$1.0 g$ of hydrogen is heated to combine with $80.0 g$ of bromine and $1.0 g$ of calcium (valency $=2$ ) combines with $4.0 g$ of bromine. The atomic weight of calcium is :

(A) 20

(B) 30

(C) 40

(D) 50

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ANSWER : Here, The atomic weight of calcium is : $40$. So, The correct answer of this question will be option (C).

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