Question

Which of the following transition neither shows absorption nor emission of energy in case of a hydrogen atom?

• A. $3p_x\to 3s$
• B. $3d_{xy}\to 3d_{yz}$
• C. $3s\to 3d_{xy}$
• D. All the above

Answer 1

The correct option is D All the above

Here all the shells are the third shell only. Hence the orbital will have the same energies.

Energy of 3p = 3d = 3s. So, in all cases, transition neither shows absorption nor emission of energy in case of the hydrogen atom.

Hence, the correct option is $D$