Answered

Why is each element unique and different from other elements in chemical properties?

AEach element has a unique atomic mass.
BEach element has a unique atomic weight.
CEach element has a unique number of protons in its nucleus.
DEach element has a unique number of neutrons in its nucleus.
EEach element has different radioactive properties.

Verified Answer :

They have unique no. of protons in its nucleus

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