JEE Mains · Chemistry · STD 11 - 3. Classification of elements and periodicity in properties
The statement\((s)\) that are correct about the species \(\mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{Na}^{+}\)and \(\mathrm{Mg}^{2+}\). \((A)\) All are isoelectronic \((B)\) All have the same nuclear charge \((C)\) \(\mathrm{O}^{2-}\) has the largest ionic radii \((D)\) \(\mathrm{Mg}^{2+}\) has the smallest ionic radii Choose the most appropriate answer from the options given below :
- A \((B), (C)\) and \((D)\) only
- B \((A), (B), (C)\) and \((D)\)
- C \((C)\) and \((D)\) only
- D \((A), (C)\) and \((D)\) only
Answer & Solution
Correct Answer
(D) \((A), (C)\) and \((D)\) only
Step-by-step Solution
Detailed explanation
\(\mathrm{O}^{-2} \mathrm{~F}^{-} \mathrm{Na}^{+} \mathrm{Mg}^{+2}\) \(\text { (No. of } \mathrm{e}^{-} \text {) } \ 10 \ 10 \ 10 \ 10\) \(\text { (Ionic radius) } \mathrm{O}^{-2}>\mathrm{F}^{-}>\mathrm{Na}^{+}>\mathrm{Mg}^{+2}\)…
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