Which of the following arrangements does not represent the correct order of the property stated against it?
A
Cu3+< Fe3+ <Cr3+<Sc3+: stability in aqueous solution
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
V2+< Cr2+<Fe2+<Mn2+: paramagnetic behaviour
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
Ni2+< Co2+ <Fe2+ <Mn2+: ionic size
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Co3+< Fe3+ <Cr3+<Sc3+: stability in aqueous solution
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is AV2+< Cr2+<Fe2+<Mn2+: paramagnetic behaviour The electronic configuration of various ionic species are:
No. of unpaired e−
V2+ - [Ar] 3d34s0 3
Cr2+ - [Ar] 3d44s0 4
Mn2+ - [Ar] 3d54s0 5
Fe2+ - [Ar] 3d64s0 4
So, the paramagnetic behavior depends on the no. of unpaired e− s. Hence more the no. of unpaired e−s, more paramagnetic species are , so the correct order is :