Question

How many electrons are present in the valence shell of the element with atomic number 18

Answer 1

atomic number = 18

element must be argon anyways

electronic configuration of argon = 2,8,8

third shell is the last shell and it can hold maximum up to 8 electrons so

valency = 0

number electrons present in the valence shell

=> 8

Answer 2

The element having atomic element 18 is Argon.

Its Electronic Configuration is 2,8,8.

So it's valence shell will have 8 electrons.


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