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### Energy levels and electrons

Posted: Wed Oct 10, 2018 2:53 pm
Why is it true that if the energy level is really high, then the energy of electron is completely removed?

### Re: Energy levels and electrons

Posted: Wed Oct 10, 2018 3:44 pm
En = -(hR)/n^2 for n = 1,2, ... ∞)

In the equation, R and h are both constants and so hR will remain the same for any value of n. When n becomes larger and larger, En becomes smaller and smaller. This is such that as n approaches ∞, En will approach 0. So if the energy level is very high, the energy of the electron will decrease to 0.

### Re: Energy levels and electrons

Posted: Wed Oct 10, 2018 3:49 pm
Hey Tatiana!

As the energy levels of an electron increase, then the electron actually moves away from the nucleus. This means that high energy levels are quite far from the nucleus. When using the equation En=-hR/n2, a higher n would make En closer to 0. This is because when the electron reaches an extremely high energy level, it's no longer associated with the nucleus.