A) is always successive (energy is released)
B) is always positive (energy is absorbed)
C) can be positive or negative
D) is always zero
Correct Answer: B
Solution :
[b] \[{{O}_{(g)}}+{{e}^{-}}\overrightarrow{-E{{A}_{1}}}{{O}^{\odot }}_{(g)}+{{e}^{-}}\overrightarrow{+E{{A}_{2}}}{{O}^{2-}}_{(g)}\] Energy is required to add an electron to the negatively charged species due to electron-electron repulsion.
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