What is the excited state of an atom?
- A$A$ state where the atom has more energy than its ground state.
- B$A$ state where the atom has less energy than its ground state.
- C$A$ state where the atom is ionized.
- D$A$ state where the atom is in its lowest energy level.
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The energy required to remove an electron from the $n = 10$ state of a hydrogen atom is ....... (in $, eV$)
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