Question

Which of the following is true about the spin-isomers of hydrogen?

• A. Ortho hydrogen has same spins of two nuclei clockwise or anti-clockwise
• B. Para hydrogen has different spins of two nuclei
• C. At about absolute zero, there is 100% para form and at higher temperature, there is 75% ortho form
• D. All are correct

Answer 1

The correct option is D All are correct

Same spin - Ortho Hydrogen

Opposite spin - (different spin)- para Hydrogen

At $0K$ = 100 % para form
At high temperature = 75 % ortho form