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Oxidation States of Lanthanides

Substances in...

Question

Substances in which the magnetic moment of a

single atom is not-zero

A

diamagnetic

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B

ferromagnetic

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C

paramagnetic

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D

electromagnetic

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Solution

The correct option is C paramagnetic
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Similar questions

Q. Which of the following substances does not posses a net magnetic dipole moment in magnetic field?

Q. If the magnetic moment of the atoms of a substance is zero, the substance is called:

Which of the following statements is not true?

(a) Paramagnetic substances are weakly attracted by magnetic field

(b) Ferromagnetic substances cannot be magnetised permanently

(c) The domains in antiferromagnetic substances are oppositely oriented with respect to each other

(d) Pairing of electrons cancels their magnetic moment in the diamagnetic substances

Q. Assertion :The atoms or ions possessing unpaired electrons are paramagnetic in nature whereas those possessing electron pairs are diamagnetic in nature. Reason: In diamagnetic substances, the spins of the two electrons cancel out and thus the diamagnetic substances doesnot show any magnetic behaviour . However in paramagnetic substances, the spin of the electron counts and the resultant magnetic moment is not zero.

The substances which contain species with unpaired electrons in their orbitals behave as paramagnetic substances. Such substances are weakly attracted by the magnetic field. The paramagnetism is expressed in terms of magnetic moment. The magnetic moment is related to the number of unpaired electrons according to the following relation:
Magnetic moment,

μ = \sqrt{n (n + 2)} B M

n =

number of unpaired electrons.

B M

stands for Bohr magneton, a unit of magnetic moment.

1 B M = \frac{e h}{4 π m c} = 9.27 \times 10^{- 24} {A m}^{2}

J T^{- 1}

Which of the following ions are diamagnetic?

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Oxidation States of Lanthanides

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