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What is the difference between #"ionization energy"#, and #"ionization potential"#?

Answer 1

I don't think there is much difference. Ionization potential is an older term, and is measured in electron volts.

The energy required to form one mole of negative ions from one mole of (gaseous) atoms and one mol of (gaseous) electrons is known as the (1st) ionization energy.

#M(g) rarr M^(+)(g) + e^-# #DeltaH# #=# #"Ionization energy"#

The ionization potential is this energy measured in electron volts. #1# #eV# #=# #96.485# #kJ*mol^-1#.

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Answer 2

Owen Ambrose

"Ionization energy" and "ionization potential" refer to the same physical property, the energy required to remove an electron from a neutral atom or a positive ion. The terms are used interchangeably.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.