Virnalis6408 Virnalis6408

10-04-2018
Chemistry

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How many valence electrons are there in an atom with the electron configuration [noble gas]ns2(n –1)d10np3?

Respuesta :

transitionstate transitionstate

19-04-2018

There are 5 valence electrons in Valence Shell.

Example,
Lets take example of Arsenic with Atomic Number 33.
Its electronic Configuration is,

[Ar] 4s², 3d¹⁰ 4p³

As the valence shell number is 4, so all the electrons present in shell 4 are said to be valence shell electrons and they are 5 in number.

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