Electron affinity is the

  • A
    Energy absorbed when an electron is added to an isolated atom in the gaseous state
  • B
    Energy released when an electron is added to an isolated atom in the gaseous state
  • C
    Energy required to take out an electron from an isolated gaseous atom
  • D
    Power of an atom to attract an electron to itself

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Similar Questions

The second electron gain enthalpies (in $kJ \ mol^{-1}$) of oxygen and sulphur respectively are

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In which of the following processes is the highest energy absorbed?

The electron affinity values for the halogens show the following trend:

Column-$I$ shows the electronic configuration of some elements and Column-$II$ shows the values of electron gain enthalpy. Match these values correctly. Match the electronic configuration with the electron gain enthalpy.
Column-$I$ Electronic Configuration Column-$II$ Electron Gain Enthalpy / $kJ \ mol^{-1}$
$(A) \ 1s^2 2s^2 2p^6$ $(1) -53$
$(B) \ 1s^2 2s^2 2p^6 3s^1$ $(2) -328$
$(C) \ 1s^2 2s^2 2p^5$ $(3) -141$
$(D) \ 1s^2 2s^2 2p^4$ $(4) +53$

The equation used to represent the electron gain enthalpy is

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