MolSynapsequestion bank

MolSynapse / Question bank / d- and f-Block Elements / Colour and magnetic properties

JEE Advanced levelOne or more correct optionsDifficulty 3 of 3df162

Which of the following ions have a spin-only magnetic moment between 2.5 BM and 4.0 BM (high spin where applicable, aqueous)?

A $Ni X^{2 +}$
B $Cr X^{3 +}$
C $V X^{2 +}$
D $Fe X^{3 +}$

Answer: A, B, C

Ni X^{2 +}

is

d^{8}

with 2.83 BM,

Cr X^{3 +}

is

d^{3}

with 3.87 BM, and

V X^{2 +}

is

d^{3}

with 3.87 BM; all are in the range.

Fe X^{3 +}

is

d^{5}

with 5.92 BM, which is outside it.

Practice d- and f-Block Elements More on Colour and magnetic properties

Previous questionNext question

More questions on Colour and magnetic properties

Which of the following complex ions have a spin-only magnetic moment of zero? JEE Advanced level
Which of the following species in aqueous solution are both diamagnetic and coloured due to charge transfer? JEE Advanced level
Mn(III) in water disproportionates: 2Mn^3+ + 2H2O -> Mn^2+ + MnO2 + 4H^+. Which statements are correct? JEE Advanced level
Which of the following statements about the aqueous chromate-dichromate system are correct? JEE Advanced level
Which of the following statements about the spectra and magnetism of trivalent lanthanide ions are correct? JEE Advanced level
Which of the following complex ions have exactly two unpaired electrons? JEE Advanced level