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Ortho and par...

Question

Ortho and para hydrogen differ in

A

atomic number

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B

mass number

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C

electron spin in two atoms

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D

nuclear spin of two atoms

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Solution

The correct option is C nuclear spin of two atoms
Ortho hydrogen molecules are those in which the spins of both the nuclei are in the same direction. Molecules of hydrogen in which the spins of both the nuclei are in the opposite direction are called para hydrogen.
Ortho and para hydrogen differ in nuclear spin of two atoms.

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State True or False.

Molecular hydrogen consists of two forms, ortho- and para- hydrogen, which differ by the spins of the electrons and nuclei.

Q. Choose the correct statement with respect to ortho hydrogen:
Statement-I: In ortho hydrogen, the spin of both nuclei are in same direction.
Statement-II: Ortho hydrogen is more abundant than para hydrogen at room temperature.
Statement-III: Thermal conductivity of ortho hydrogen is more than para hydrogen.

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Reason: They have same nuclear spins.

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