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The oxides of two metals A and B are iso...

The oxides of two metals A and B are isomorphous. The metal A (atomic weight = 52.9) forms a chloride whose vapour density is 79. The oxide of B contains 47.1% of oxygen. Thus, atomic weight of B is

A

27

B

13

C

42

D

54

Text Solution

Verified by Experts

The correct Answer is:
A
Equivalent wt. of `B =(52 .9 )/( 47.1 ) xx 8 = 8.98 `
Valency of metal A in chloride `ACI_x ` = ?
(Vapour density method)
Mol. wt. of `ACI_x = 2 xx 79 = 52.9+ xx 35.5 implies x = 2.96 ~~ 3`
Oxides of A and B are isomorphous.
Atomic weight of B=eq. wt. `xx` valency `= 8.98 xx 3 = 26.94 ~~ 27`
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