Which one of the properties of an element is not variable and why ? (a)valency (b)atomic weight
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a) valency because atomic number of an element is always fixed so the valency is also fixed but the atomic weight of an element change as an element shows different weight
this is known as isotopes
Kanak2910:
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(a)valency is the answer.
Hope it helped you.
Hope it helped you.
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