JEE Mains 1-Feb-2023 Shift 2 Solved Paper

Section: Chemistry

Question : 47 of 90

Marks: +1, -0

Which one of the following sets of ions represents a collection of isoelectronic species?
(Given : Atomic Number: F:9,Cl:17,Na=11, Mg=12,Al=13,K=19,Ca=20,Sc=21 )

[1-Feb-2023 Shift 2]

(Li+,Na+,Mg2+,Ca2+.
Ba2+,Sr2+,K+,Ca2+
CN3−,O2−,F−,S2−
(K+,Cl−,Ca2+,Sc3+.

Validate

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