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The molecular weight of chloride of an e...

The molecular weight of chloride of an element is 79. The `Ew` of the elements is 3.82. The atomic weight of the elements is

A

15.28

B

7.64

C

3.82

D

11.46

Text Solution

Verified by Experts

The correct Answer is:
B
`Mw = Ew xx x`
Valency of metal `= x`
Atomic weight of element `= Ew xx x`
`MCl_(x) = 3.82 xx x + x xx 35.5 = 79`
`x = (79)/(3.82 + 35.5) ~~ 2`
Atomic weight `= Ew xx x = 3.82 xx 2 = 7.64`
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