How many ionisation energies can carbon have ? Electron configuration of carbon {:("in Ground state", 1s^2 2s^2 2p_x^1 2p_y^1),("in Excited state", 1s^2 2s^1 2p_x^1 2p_y^1 2p_z^1):}

How many ionisation energies can carbon have ? Electron configuration

1.	How many ionisation energies can carbon have ? Electron configuration of carbon {:("in Ground state", 1s^2 2s^2 2p_x^1 2p_y^1),("in Excited state", 1s^2 2s^1 2p_x^1 2p_y^1 2p_z^1):}
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