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Abundance and Isotopes

In a hydrogen...

Question

In a hydrogen molecule, when the spins are in the same direction. What is it known as?

A

adsorbent hydrogen

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B

nascent hydrogen

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C

para hydrogen

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D

ortho hydrogen

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Solution

The correct option is D ortho hydrogen
When in the hydrogen molecule, the nucleus spins are in the same direction, it is known as ortho hydrogen. When the spins are in the opposite direction, it is known as para hydrogen. At room temperature hydrogen consists of 75% ortho and 25% para hydrogens.
Ortho and para hydrogen have same chemical property but different physical property due to varying electron distribution in the structures.

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