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Q. Para and ortho hydrogen differ in:

Hydrogen

Solution:

Spins of protons differ in para and ortho hydrogen

image

(Parallel nuclears spins)
total nuclear spin =
$+\frac{1}{2}+\left(+\frac{1}{2}\right)=1$
(Anti-Parallel nuclear Spins)
Total nuclear spin =
$+\frac{1}{2}+\left(-\frac{1}{2}\right)=0$