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Periodicity

32. Why elect...

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32. Why electron affinity is only defined for neutral isolated gaseous atom and not for others

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Q. The energy required to remove an electron from a neutral isolated gaseous atom and convert it into a positively charged gaseous ion is called _______. (electron affinity, ionisation potential, electronegativity).

Q. When an electron is added to the neutral isolated atom, energy is given out. It is an exothermic process. In this process, monoanion is formed. Electron affinity of an element is defined as the amount of energy liberated when an electron is added to the neutral isolated atom in its ground state. Greater the amount of energy released, greater is the electron affinity. Electron affinity is expressed in terms of

e V a t o m^{- 1}

K c a l

k J m o l^{- 1}

.

Electron affinity of elements depends on which of the following?

Q. When an electron is added to the neutral isolated atom, energy is given out. It is an exothermic process. In this process, monoanion is formed. Electron affinity of an element is defined as the amount of energy liberated when an electron is added to the neutral isolated atom in its ground state. Greater the amount of energy released, greater is the electron affinity. Electron affinity is expressed in terms of

e V a t o m^{- 1}

K c a l

k J m o l^{- 1}

.

Electron affinity of elements depends on which of the following?

What is the significance of the terms - ‘isolated gaseous atom’ and ‘ground state’ while defining the ionization enthalpy and electron gain enthalpy?

Hint: Requirements for comparison purposes.

Q. The energy released when an electron is added to the valence shell of a neutral, gaseous, isolated atom is called

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