Which one of the following sets correctly represents the increase in the paramagnetic property of the ions ?

Question

Which one of the following sets correctly represents the increase in the paramagnetic property of the ions ? (A) Cu2+ > V2+ > Cr2+ > Mn2+ (B) Cu2+ < Cr2+ < V2+ < Mn2+ (C) Cu2+ < V2+ < Cr2+ < Mn2+ (D) V2+ < Cu2+ < Cr2+ < Mn2+

Tardigrade Admin · Accepted Answer

Paramagnetic property depends upon the number of unpaired electrons. Higher the number of unpaired electrons, higher the paramagnetic property will be.

C u^{2 +} = [A r] 3 d^{9}

, no. of unpaired electrons

= 1

V^{2 +} = [A r] 3 d^{3}

, no. of unpaired electrons

= 3

C r^{2 +} = [A r] 3 d^{4}

, no. of unpaired electrons

= 4

M n^{2 +} = [A r] 3 d^{5}

, no. of unpaired electrons

= 5

Hence, correct order is -

C u^{2 +} < V^{2 +} < C r^{2 +} < M n^{2 +}

Q. Which one of the following sets correctly represents the increase in the paramagnetic property of the ions ?

$C u^{2 +} > V^{2 +} > C r^{2 +} > M n^{2 +}$

$C u^{2 +} < C r^{2 +} < V^{2 +} < M n^{2 +}$

$C u^{2 +} < V^{2 +} < C r^{2 +} < M n^{2 +}$

$V^{2 +} < C u^{2 +} < C r^{2 +} < M n^{2 +}$

Q. Which one of the following sets correctly represents the increase in the paramagnetic property of the ions ?

Cu2+>V2+>Cr2+>Mn2+

Cu2+<Cr2+<V2+<Mn2+

Cu2+<V2+<Cr2+<Mn2+

V2+<Cu2+<Cr2+<Mn2+

$C u^{2 +} > V^{2 +} > C r^{2 +} > M n^{2 +}$

$C u^{2 +} < C r^{2 +} < V^{2 +} < M n^{2 +}$

$C u^{2 +} < V^{2 +} < C r^{2 +} < M n^{2 +}$

$V^{2 +} < C u^{2 +} < C r^{2 +} < M n^{2 +}$