Question

Which of the following are the values of
electron affinities in kJ/mol for the formation
of O and O2 from O ?
a) - 142, -702
b)-141, 702
c) 142, 702
d) -142, -142​

Answer 1

Answer:

your answer is c

Explanation:

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Answer 2

Answer:

B)

Explanation:

O(g)+e− →O −(h)               EA=−ve

O−(g)+e− →O2−(g)            EA=+ve

This is because, existing electron have higher repulsive forces and because of that when O− ion gets electron, it absorb some energy for this process.