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 )

Question

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 ) (A) N 3-, O 2-, F -, S 2- (B) Li +, Na +, Mg 2+, Ca 2+ (C) Ba 2+, Sr 2+, K +, Ca 2+ (D) K +, Cl -, Ca 2+, Sc 3+

Tardigrade Admin · Accepted Answer

Correct answer is (d) K +, Cl -, Ca 2+, Sc 3+

Q. Which one of the following sets of ions represents a collection of isoelectronic species?
(Given : Atomic Number : $F = 9, Cl = 17, N a = 11, M g = 12, A l = 13, K = 19, C a = 20, S c = 21$ )

$N^{3 -}, O^{2 -}, F^{-}, S^{2 -}$

$L i^{+}, N a^{+}, M g^{2 +}, C a^{2 +}$

$B a^{2 +}, S r^{2 +}, K^{+}, C a^{2 +}$

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

Correct answer is (d) $K^{+}, C l^{-}, C a^{2 +}, S c^{3 +}$

Q. 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 )

N3−,O2−,F−,S2−

Li+,Na+,Mg2+,Ca2+

Ba2+,Sr2+,K+,Ca2+

K+,Cl−,Ca2+,Sc3+