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13 cards from this deck
Min. energy to remove most loosely bound e−e^-e− from neutral gaseous atom
Eliminates intermolecular forces; shows true nucleus-e−e^-e− force
Decreases
Larger atomic radius = weaker attraction to nucleus
Inner e−e^-e− shield outer e−e^-e− from nucleus, lowering IE
Generally increases
Higher nuclear charge; e−e^-e− in same shell = stronger attraction
Extra stability = higher IE than expected
Beryllium (filled 2s) & nitrogen (half-filled 2p)
Electron energy levels/shells
e−e^-e− removed from inner energy level
Highly reactive (e.g., alkali metals)
496496496 kJ mol−1^{-1}−1
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