Science, asked by shanayaroy5, 11 months ago

ans this question please

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Answered by Anonymous

There are two periodic laws in chemistry:

Periodic Law( older one which was proposed by Mendeleev)- it states that the physical and chemical properties of elements are a periodic function of their atomic mass.

Modern periodic Law ( it was proposed by Henry Moseley) - it states that the physical and chemical properties of elements is the periodic function of their atomic number.

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