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  • The size of isoelectronic species — F–, Ne and Na+ is affected by (a) nuclear charge (Z ) (b) valence principal quantum number (n) (c) electron-electron interaction in the outer orbitals (d) none of the factors because their size is the same.

3.36  The size of isoelectronic species - F^-, Ne and Na^+ is affected by

        (a) nuclear charge (Z )

        (b) valence principal quantum number (n)

        (c) electron-electron interaction in the outer orbitals

       (d) none of the factors because their size is the same.

Answers (1)

best_answer

Answer - (a) Nuclear charge (Z)

Because as the nuclear charge increases the size of an isoelectronic species decreases.

Here we have the isoelectronic species: F^-, Ne and Na^+

F^-  has  Z=9  

Ne  has  Z=10 

Na^{+}  has  Z=11

Therefore, the order of the increasing size is as follows:

 Na^{+}<Ne<F^{-}

 

 

Posted by

Divya Prakash Singh

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