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Question

Which of the following property of an element never changes?

A
Valency
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B
Atomic weight
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C
Both A and B
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D
None of the above
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Solution

The correct option is B Atomic weight
The atomic weight is a characteristic property of an element and can never vary.

The valency of an element can vary. For example, when the ion is in +2 and +3 oxidation state, its valency is 2 and 3 respectively.


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