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Question

Chemistry Question on Ionic Equilibrium In Solution

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=21F : 9, Cl : 17, Na =11, Mg =12, Al =13, K =19, Ca =20, Sc =21)

A

N3,O2,F,S2N ^{3-}, O ^{2-}, F ^{-}, S ^{2-}

B

Li+,Na+,Mg2+,Ca2+Li ^{+}, Na ^{+}, Mg { }^{2+}, Ca ^{2+}

C

Ba2+,Sr2+,K+,Ca2+Ba ^{2+}, Sr ^{2+}, K ^{+}, Ca ^{2+}

D

K+,Cl,Ca2+,Sc3+K ^{+}, Cl ^{-}, Ca ^{2+}, Sc ^{3+}

Answer

Li+,Na+,Mg2+,Ca2+Li ^{+}, Na ^{+}, Mg { }^{2+}, Ca ^{2+}

Explanation

Solution

So, the correct option is (B): Li+,Na+,Mg2+,Ca2+Li ^{+}, Na ^{+}, Mg { }^{2+}, Ca ^{2+}