Which one of the following sets of ions represent the collection of isoelectronic species?

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

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

N a^{+}, M g^{2 +}, A l^{3 +}, C l^{-}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

K^{+}, C l^{-}, M g^{2 +}, S c^{3 +}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

N a^{+}, C a^{2 +}, S c^{3 +}, F^{-}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C $K^{+}, C a^{2 +}, S c^{3 +}, C l^{-}$
Isoelectronic means the species must have the same electronic configuration.

$\to$ Only the set of $K^{+}, C a^{2 +}, S c^{3 +}, C l^{-}$ represents isoelectronic species.

$K, Z = 19,$ Number of electrons in $K^{+} = 18$
$C a, Z = 20,$ Number of electrons in $C a^{2 +} = 18$
$S c, Z = 21,$ Number of electrons in $S c^{3 +} = 18$
$C l, Z = 17,$ Number of electrons in $C l^{-} = 18$

Hence the correct option is A.

Suggest Corrections

Similar questions

Which of the following sets contain only isoelectronic ions?
(i) $Z n^{2 +}, C a^{2 +}, G a^{3 +}, A l^{3 +}$

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

(iii) $P^{3 -}, S^{2 -}, C l^{-}, K^{+}$

(iv) $T i^{4 +}, A r, C r^{3 +}, v^{5 +}$

S^{2 -}, N a^{+}, C a^{2 +}, C l^{-}

i) N e i i) O^{2 -} i i i) M g^{2 +} i v) F

v) A l^{3 +} v i) C l^{-} v i i) K v i i i) N a

S^{2 -}, N a^{+}, C a^{2 +}, C l^{-}

Join BYJU'S Learning Program