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प्रश्न
Explain the following.
The ionic radii of FΘ and Na⊕ are 133 and 98 pm, respectively.
उत्तर
- FΘ and Na⊕ are isoelectronic ions as they both have 10 electrons.
- However, the nuclear charge on FΘ is +9 while that of Na⊕ is +11.
- In isoelectronic species, a larger nuclear charge exerts a greater attraction on the electrons and thus, the radius of that isoelectronic species becomes smaller.
- Thus, FΘ has a larger ionic radii (133 pm) than Na⊕ (98 pm).
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