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Question

10800 C of electricity through the electrolyte deposited 2.977 g of metal with atmic mass 106.4 g mol1. The charge on the metal cation is:

A
+4
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B
+3
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C
+2
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D
+1
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Solution

The correct option is A +4
10800C=2.977g

96500C=?
Hence,

96500×2.97710800
=26.600g/mol
thus,106.4g/mol26.600g/mol
=+4 is the answer.

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