Answer:
In the case when the orbital radius of the electron increases so potential energy should
a) increase
Explanation:
Potential energy:
When there is an increment in the orbital radius of the electron so it represents the distance via the nucleus of increment of the hydrogen atom. And, this nucleus should be considered as positively charged.
The equation for potential energy should be
= Ze^2/ -r
Here
Z be the atomic number
And, r be the radius
Here the negative sign represents the electron i.e. revolving should be bounded to the nucleus. Also, the relationship between the radius and the potential energy should be inversely proportional.