# How to increase the energy of an electron

• I
• HastiM
In summary, the energy level of an atom is indicated by the number of electrons that is present at that level.

#### HastiM

Hello,

in class we learned about the hydrogen atom and in particular the quantum states describing the electron in hydrogen atom (we denoted them as usual by 1s, 2s, 2p etc.). Whenever we talked about state transitions of the electron, like transition from 1s to 2p state, we imagined an electron absorbing a photon (carrying the necessary amount energy.) Similarly, in order to lose energy, we imagined an electron emitting a photon.

I am wondering if this is the only way to raise or lower the energy of an electron? I would expect that there are many different ways. But maybe the photon situation is the most probable one. It would be great if someone could tell explain how it works...

HastiM said:
Hello,

in class we learned about the hydrogen atom and in particular the quantum states describing the electron in hydrogen atom (we denoted them as usual by 1s, 2s, 2p etc.). Whenever we talked about state transitions of the electron, like transition from 1s to 2p state, we imagined an electron absorbing a photon (carrying the necessary amount energy.) Similarly, in order to lose energy, we imagined an electron emitting a photon.

I am wondering if this is the only way to raise or lower the energy of an electron? I would expect that there are many different ways. But maybe the photon situation is the most probable one. It would be great if someone could tell explain how it works...

In a discharge tube, gasses are excited via the bombardment of these gas molecules with energetic electrons that came out of a heated cathode. This is how you get light from your fluorescent light bulbs.

BTW, just to make sure you get the term accurately, you are not raising or lowering the energy of an electron. Rather, you are raising or lowering the energy of the atom or molecule as a whole. The energy levels that you stated is the energy level of the ATOM. It just that it happens to be occupied by one or more electrons, and the signature of the atom having a higher energy level is indicated by an electron being promoted to that level. But the "thing" that became more energetic is the whole atom, not just that particular electron.

Zz.

jfizzix, dlgoff and HastiM
Thank you very much!

## 1. How does an electron gain energy?

An electron can gain energy through various processes such as absorption of photons, collisions with other particles, or through chemical reactions. This energy is then used to excite the electron to a higher energy level.

## 2. What factors affect the energy of an electron?

The energy of an electron is affected by the electric field it is in, the type of material it is in, and its distance from the nucleus. Additionally, the energy of an electron can be affected by its spin, which can be altered by external magnetic fields.

## 3. Can the energy of an electron be controlled?

Yes, the energy of an electron can be controlled by manipulating its environment. For example, in a semiconductor material, the energy levels of electrons can be controlled by applying an electric field. In a vacuum, electrons can be accelerated using an electric field to increase their energy.

## 4. How does an electron lose energy?

An electron can lose energy through various processes such as emission of photons, collisions with other particles, or through chemical reactions. This energy loss results in the electron moving to a lower energy level.

## 5. Can the energy of an electron be increased indefinitely?

No, the energy of an electron cannot be increased indefinitely. It is limited by the laws of physics and the maximum energy that an electron can have is determined by its mass and charge. Additionally, as an electron gains energy, it becomes more difficult to accelerate it further.