Anything that influences the valence electrons will affect the chemistry of the element Which one of the following factors does not affect the valence shell?

CBSE Class 11 CBSE Class 11 Chemistry
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Anything that influences the valence electrons will affect the chemistry of the element Which one of the following factors does not affect the valence shell ?
(a) Valence principal quantum number (n)
(b) Nuclear charge (Z)
© Nuclear mass
(d) Number of core electrons.

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© Nuclear mass does not affect the valence shell