The ground state refers to the lowest energy state that an atom or molecule can have. It is the state in which the electrons are in their most stable configuration, with the lowest possible energy levels.
The ground state is determined by the arrangement of electrons in an atom or molecule, following the rules of quantum mechanics. The electrons fill up energy levels in a specific order, with the lowest energy levels being filled first.
The energy level of -14.35eV represents the energy of the lowest energy state of an H- ion. This is the energy level that the electrons in the H- ion occupy in the ground state.
The ground state of an H- ion is different from the ground state of a neutral hydrogen atom because the H- ion has an extra electron. This causes the energy levels to shift and the ground state energy level to be lower for the H- ion.
Yes, the ground state of an H- ion can change if it gains or loses electrons. This will result in a different arrangement of electrons and a different ground state energy level.