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10 cards from this deck
Energy required to remove an electron from an atom or ion
Energy to remove 1 mol e⁻ from 1 mol gas atoms → 1 mol +1 ions
kJ/mol (kilojoules per mole)
X(g)→X+(g)+e−X(g) \rightarrow X^+(g) + e^-X(g)→X+(g)+e−
Energy needed to remove more than one electron from an atom
Electron removed is closer to the nucleus
Fewer electrons to shield attraction from nucleus
Always higher than the previous one
X+(g)→X2+(g)+e−X^+(g) \rightarrow X^{2+}(g) + e^-X+(g)→X2+(g)+e−
X2+(g)→X3+(g)+e−X^{2+}(g) \rightarrow X^{3+}(g) + e^-X2+(g)→X3+(g)+e−
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