Among the following ions which one has the highest paramagnetism?

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

CrH2O63+

FeH2O62+

CuH2O62+

ZnH2O62+

answer is B.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

[Cr(H2O)6]3+The oxidation number of Cr is +3Atomic number = 24Cr = [Ar]3d54s1Cr3+=[Ar]3d34s0There are three unpaired electrons. [Fe(H2O)6]2+The oxidation number of Fe is +2.Atomic number = 26Fe = [Ar]3d64s2Fe2+=[Ar]3d64s0There are four unpaired electrons [Cu(H2O)6]2+The oxidation number of Cu is +2.Atomic number = 29Cu = [Ar]3d104s1Cu2+=[Ar]3d94s0There is one unpaired electron. [Zn(H2O)6]2+The oxidation number of Zn is + 2.Atomic number = 30Zn = [Ar]3d104s2Zn2+=[Ar]3d104s0 There are no unpaired electrons.[Fe(H2O)6]2+ has the maximum number of unpaired electrons; therefore, the highest degree of paramagnetism.

Watch 3-min video & get full concept clarity