Question

In which of the following process, Maximum amount of energy required?

• A. $F\to F^{-}$
• B. $O^{-}\to O^{2-}$
• C. $Cl\to C{l}^{-}$
• D. $C{l}^{+}\to Cl$

Answer 1

Answer: (B)

$O^{-}+e^{-}\to O^{2-}$ endothermic other's exothermic