Question

Argon has atomic number 18. Write number of protons, number of

electrons and valence electrons.​

Answer 1

Argon with atomic number= 18. So Argon has 18 electrons and 8 valence electrons or octet and hence having a noble has configuration.

Answer 2

Explanation:

NO. OF PROTONS = NO. OF ELECTRON = ATOMIC NUMBER

THEREFORE

ATOMIC NO. IS 18

SO

NO.OF PROTON IS 18

NO.OF ELECTRON IS 18

AND

AS

ARGON HAS COMPLETE OCTET

IT HAS 8 ELECTRONS IN LAST SHELL

SO VALENCE ELECTRONS = 8