In which of the following processes is energy | vedclass

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(C) The process $Cl + e^{-} \rightarrow Cl^{-}$ represents the addition of an electron to a neutral chlorine atom to form a chloride ion.This process

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$Cl + e^{-} \rightarrow Cl^{-}$

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(C) The process $Cl + e^{-} \rightarrow Cl^{-}$ represents the addition of an electron to a neutral chlorine atom to form a chloride ion.This process completes the octet of the chlorine atom,which is a stable configuration.Energy is released during this process,which is known as the electron gain enthalpy (or electron affinity).In contrast,$Cl \rightarrow Cl^{+} + e^{-}$ is an ionization process requiring energy,$HCl \rightarrow H^{+} + Cl^{-}$ is a bond dissociation process requiring energy,and $O^{-} + e^{-} \rightarrow O^{2-}$ is an endothermic process due to inter-electronic repulsion.

In which of the following processes is energy liberated?

Similar Questions

The correct electron affinity order is $(EA = -\Delta H_{EG})$

Which of the following processes involves absorption of energy?

Halogens have maximum negative electron gain enthalpy in the respective periods of the periodic table. Why?

The formation of the oxide ion $O_{(g)}^{2-}$ requires first an exothermic and then an endothermic step as shown below. This is because
$O_{(g)} + e^{-} \rightarrow O_{(g)}^{-}; \Delta H^{o} = -142 \ kJ \ mol^{-1}$
$O_{(g)}^{-} + e^{-} \rightarrow O_{(g)}^{2-}; \Delta H^{o} = 844 \ kJ \ mol^{-1}$

Which of the following statements regarding electron affinity is correct?

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