ionization energy

[Addallat]

TBR G chem listed:
Phosphorus as having a greater ionization energy than Bromine.

From the periodic trend of electron affinity, doesn't bromine have greater electron affinity therefore a greater ionization energy?

I'm guessing this has something to do with atomic radius where phosphorus is smaller than bromine so it has the greater ionization energy?

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[Teleologist]

From the periodic trend of electron affinity, doesn't bromine have greater electron affinity therefore a greater ionization energy?

Lol hold up one second why are we conflating electron affinity with ionization energy?

Fluorine has a lower EA than chlorine, yet fluorine has the greater first ionization energy.

TBR G chem listed:
Phosphorus as having a greater ionization energy than Bromine.

That's apparent from the trend of ionization energies.

I'm guessing this has something to do with atomic radius where phosphorus is smaller than bromine so it has the greater ionization energy?

Yes.