How many energy levels does hydrogen have?

Hydrogen can have an infinite number of energy levels, based on the principle of quantum mechanics. These energy levels are represented by the quantum number "n".

A hydrogen atom is the simplest atom that exists in nature, consisting of a single proton and a lone electron. The electron is most likely found in an electron cloud, where it occupies a particular orbital "state" that corresponds to an energy level. In a neutral atom, the electron is found in the "ground state," or the energy level that is closest to the proton. Each energy level contains a specific amount of energy, which is denoted by a negative eV quantity. The energy levels of hydrogen can be obtained by using the general equation E = - E₀/n², where "E" indicates the energy level, "E₀" equals 13.6 eV and "n" takes on a range of values from one to infinity.