The formula to calculate the Energy Level (E) is:
\[ E = - \frac{1}{n^2} \times 13.6 \text{ eV} \]
Where:
An energy level is a fixed amount of energy that a system, such as molecules, atoms, electrons, etc., can have. In the context of an atom, it refers to the specific energies that electrons can have when they occupy specific orbits around the nucleus. These energy levels are quantized, meaning electrons can only exist at certain energy levels and not between them.
Let's assume we want to find the energy level for the 2nd level (n = 2):
Using the formula to calculate the Energy Level:
\[ E = - \frac{1}{2^2} \times 13.6 = - \frac{1}{4} \times 13.6 = - 3.4 \text{ eV} \]
The Energy Level for n = 2 is -3.4 eV.