[dolimitless]

I know that a hydrogen atom has one electron in the first energy level. 
How many energy levels can the electron be excited too before it leaves
the atom?

[Schrödinger]

Theoretically speaking, there are infinitely many energy levels for any atom. But as we move away from the nucleus, the energy gap between two consecutive energy levels goes on decreasing. So, as we approach distant energy levels, they are kind of merged together almost... I don't think u have any limit theoretically..

[ugbede]

Hydrogen 1s^1. Therefore, ionization of hydrogen is what it take to excite it from it ground state. Hope it help, if no read chang chemistry

[Borek]

Hydrogen 1s^1. Therefore, ionization of hydrogen is what it take to excite it from it ground state. Hope it help, if no read chang chemistry

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