NEET UG CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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Which of the following sets represents the collection of isoelectronic species?

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Correct option: D

{\mathrm{K}^ + },\mathrm{C}{\mathrm{a}^{2 + }},\mathrm{S}{\mathrm{c}^{3 + }},\mathrm{C}{\mathrm{l}^ - }

Option D (

{\mathrm{K}^ + },\mathrm{C}{\mathrm{a}^{2 + }},\mathrm{S}{\mathrm{c}^{3 + }},\mathrm{C}{\mathrm{l}^ - }

) is correct because all the species have the same number of electrons (18), making them isoelectronic.

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