F an electron fell to a lower orbit or energy level, energy would be

A. created.

B. emitted.

C. absorbed.

D. transferred.

How interesting that you described it as a "fall" to a

"lower energy" level. You picked up that description

from hearing it used somewhere before.

It's an accurate description, and it's a big hint to the answer.

When an object falls from a higher to a lower place,

it gives up gravitational potential energy, and then

it has less of it. If it wants to return to the height

where it was before, somebody has to come along

and do work on it to lift it, and give it back the energy

it needs to be up at that height.

Same with your electron. The farther it is from the

nucleus, the more potential energy it has ... only

it's electrical, not gravitational.

If the electron emits (gives out) some energy, then it

"falls" to a lower orbit / lower energy level.

Then, If somebody comes along and gives it

more energy, it can rise to a higher orbit / higher

energy level.

And if they give it enough energy, then it can

escape from the atom all together!