Discussion Forum : Periodic Classification Of Elements
Question -
In which of the following processes is energy liberated?
Answer: Option C
:
C
Generally, to determine whether energy is released or absorbed when an electron is added to a neutral gaseous atom, you need to look at the stability of the species.
If we add an electron to Cl atom, energy will be released because Cl− is more stable than Cl atom.
If we add an electron to N atom, energy will be absorbed because N is more stable than N−
In the case of anions, energy is always absorbed when an electron is added.
So, if an electron is added to O− ion a lot of energy is needed to make itO2−
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:
C
Generally, to determine whether energy is released or absorbed when an electron is added to a neutral gaseous atom, you need to look at the stability of the species.
If we add an electron to Cl atom, energy will be released because Cl− is more stable than Cl atom.
If we add an electron to N atom, energy will be absorbed because N is more stable than N−
In the case of anions, energy is always absorbed when an electron is added.
So, if an electron is added to O− ion a lot of energy is needed to make itO2−
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