If and for oxygen atom are and

CHEMISTRY · Single correct · AP · Chemistry · Atomic Structure and Properties · Atomic Structure and Properties

Problem

If

EA_1

and

EA_2

for oxygen atom are

-142\ \text{kJ mol}^{-1}

and

+844\ \text{kJ mol}^{-1}

. The energy released to form

2\text{O} + 2e \longrightarrow 2\text{O}^-

will be: (in

\text{kJ mol}^{-1}

) (1) 986 (2) 702 (3) 284 (4) 1688

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