hi ok so first think of the factors that affect ionisation energy :
nuclear charge
distance from the nucleus(atomic radius)
shielding
think which of these factors are increased or decreased when the elements lose eletrons
for example oxygen compared to nitrogen and second ionisation energy:
oxygen still has the higher nuclear than nitrogen as it has more protons
oxygen would have the smaller atomic radius as the protons pulls the shells in (and they have the same amount of shells)
shielding again same shells so sheilding has no real effect
so I would oxygen would have the higher second ionisation energy as its distance from the nucleus is smaller and it has a higher nuclear charge
do this with all the trends and see
sorry if its not clear I dont want to give away the answer but dont want to be unclear in explaination
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