Question

22. On the basis of LCAO-MO theory, the magnetic characteristics of N2 and N2+ are
A. N2 is paramagnetic and N2+ is diamagnetic
B. N2 is diamagnetic and N2+ is paramagnetic
C. Both are paramagnetic
D. Both are diamagnetic
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Answer 1

Answer:

B.N2 is diamagnetic and N2+ is paramagnetic

Answer 2

Answer:

(B) N2 is diamagnetic and N2+ is paramagnetic

Explanation:

Diamagnetic Substances

Diamagnetic substances are the weakly magnetized substances when placed in an external magnetic field in a direction which is opposite to the applied field. So, the type of magnetism which is exhibited by these substances is known as diamagnetism.

Examples: copper, gold, antimony, bismuth, silver, lead, silicon, mercury, etc. 

Paramagnetic Substances

Paramagnetic substances get weakly magnetized when placed in an external magnetic field in the same direction as the direction of the externally applied field. Paramagnetic substances substances are different from the ferromagnetic and diamagnetic substances. Paramagnetic substances have the tendency to move from the weaker to the stronger part of the magnetic field.

Examples: calcium, lithium, tungsten, aluminum, platinum, etc.

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