Question

a photon was absorbed by a hydrogen atom in its ground state and electron was promoted to the 5th Orbit. when the excited atom returned to its ground is divisible contact parameter when electron transition between
a 5 to 2
b 2 to 1
c 3 to 1
d 4 to 1​

Answer 1

Answer:

2 to 1.

Explanation:

We get from the question that the the emission of visible light is involving the  transition to the second orbit as it is also having the Balmer series which is from the fifth orbit to the second orbital.

Thus, from the above explanation we know that the exited atom is in the second orbital, so the transition must be taking from the 2 to 1 for an atom which is returning to its ground state.