Question

Amongst the following ions, which one has the highest paramagnetism?

Solution

Correct option is

 

Since H2O is a weak field ligand, all the hexaaqua metal ions use sp3d2hybridisation.  

Cr3+, Fe2+, Zn2+ and Cu2+ have 3, 4, 0 and 1 unpaired electrons respectively.

SIMILAR QUESTIONS

Q1

Which of the following pair of complexes have the same EAN of the central metal atoms/ions?

Q2

The complexes that violates the Sidwicks’s rule of EAN is

Q3

The complex ion which has no ‘d’ electrons in the central metal atoms is

Q4

In nitroprusside ion, the iron and NO exists as Fe(II) and rather than Fe(III) and NO. This can be established by

Q5

Oxidation number of Fe in violet coloured complex Na4[Fe(CN)5(NO)S] is

Q6

Complexes [Co(NH3)5SO4]Br and [Co(NH3)5Br]SO4 can be distinguished by

Q7

The coordination number, EAN of the central metal atom and geometry of the complex ion obtained by adding CuSO4 to excess of aqueous KCN are respectively

Q8

The complex [Fe(H2O)5NO]2+ ion has a magnetic moment of 3.87 B.M. This is indicative of the fact that

Q9

Ni(CO)4 and [Ni(NH3)4]2+ do not differ in

Q10

Which of the following statements is not correct?