Case 1: An electron jumps from energy level 3 to energy level 7 in an atom.
Case 2: An electron jumps from energy level 3 to energy level 9 in an atom.

For case 1, what happens when an electron jumps from energy level 3 to energy level 7 in an atom?

The light is getting absorbed for the given transition.

Explanation:

There are two ways in which electrons can transition between energy levels:

Absorption spectra: This type of spectra is seen when an electron jumps from lower energy level to higher energy level. In this process, energy is absorbed.Emission spectra: This type of spectra is seen when an electron jumps from higher energy level to lower energy level. In this process, energy is released in the form of photons.

We are given:

Lower (Initial) energy level = 3

Higher (Final) energy level = 7

As, the electron is jumping from lower energy level to higher energy level. So, the light gets absorbed.

Hence, the light is getting absorbed for the given transition.

Matter- occupies space and possesses rest massno matter is the opposite

Maybe you should get some from your teacher and learn more so you can get your grades up and maybe study a bit more