Which order of electron affinity for the elements or ions shown is correct?

CHEMISTRY · Single correct · A Level · Chemistry · Periodicity and periodic trends · Periodicity and periodic trends

Problem

Which order of electron affinity for the elements or ions shown is correct? (1)

S > O^-

(2)

P > N^-

(3)

O^- > S^-

(4)

N^- > P

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