The ionic radii in ( A ~ … ) of N 3 − , O 2 − and F − are respectively.

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ChemistryPERIODIC TABLEMiscellaneous/MixedEasy2 minPYQ_2024

ChemistryEasysingle choice

The ionic radii in $(\tilde{A} \dots)$ of $N^{3 -}, O^{2 -}$ and $F^{-}$ are respectively.

Options:

Answer:

Solution:

$N^{3 -}, O^{2 -}$ and $F^{-}$ are isoelectronics ( 10 electrons) species. Their ionic radii will decrease with increase in magnitude of the nuclear charge from $N (Z = 7)$ to O $(Z = 8)$ and $F (Z = 9)$ . i.e. $N^{3 -} > 1.71 \tilde{A} \dots O^{2 -} > 1.40 \tilde{A} \dots F^{-} 1.36 \tilde{A} \dots$ Hence, option (1) is correct.

Stream:BITSATSubject:ChemistryTopic:PERIODIC TABLESubtopic:Miscellaneous/Mixed

⏱ 2mℹ️ Source: PYQ_2024

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