MCQ
Which of the following property of an element never changes?
- AValency
- ✓Atomic weight
- CBoth $A$ and $B$
- DNone of the above
✓
Answer
Correct option: 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.
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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