The ortho and para hydrogen differ in respect of which of the following?

JEE Main Chemistry question

Not in JEE Main or NEET syllabus

The and hydrogen differ in respect of which of the following?

(A)In the molecular weight
(B)In the nature of spin of protonsCorrect
(C)In the nature of spin of electrons
(D)In the number of protons

Answer: (B)

Solution

Ortho- and para-hydrogen are nuclear-spin isomers of the H molecule: in ortho-hydrogen the two proton (nuclear) spins are parallel, while in para-hydrogen they are antiparallel. They have identical molecular weight (A wrong),

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Question ID VK-137175