In case of isoelectronic species the size of $\mathrm{F}^{-}, \mathrm{Ne}$ and $\mathrm{Na}^{+}$is affected by:
Select the correct option:
A
Principal quantum number (n)
B
None of the factors because their size is the same
C
Electron-electron interaction in the outer orbitals
D
Nuclear charge (z)
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Solution
In $\mathrm{F}^{-}, \mathrm{Ne}, \mathrm{Na}^{+}$all have $1 \mathrm{~s}^2, 2 \mathrm{~s}^2, 2 \mathrm{p}^6$ configuration. They have different size due to the difference in nuclear charge.
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