English, asked by PrinceAman1001, 1 year ago

how to find molecular mass ,, atomic number and electronic configuration.???

Answers

Answered by Anonymous

Atomic Number
The number of protons in an atom of an element is called atomic number.
Mass Number=No. of protons+No. of neutrons
A=P+N.
1)Helium(Z=2)
Electronic Configuration=2
Valency=2

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