Which among the following options defined electron affinity ?

The change in energy when a gaseous atom in its ground state gains an electron

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The pull an atom has on the electrons in a chemical bond

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The energy required to remove a valence electron from an neutral gaseous atom in its ground state

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The energy difference between an electron on its ground and excited states

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None of the above

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Solution

The correct option is B The change in energy when a gaseous atom in its ground state gains an electron
The electron affinity of an atom or molecule is defined as the amount of energy released when an electron is added to a neutral atom or molecule in the gaseous state to form a negative ion.

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Which among the following options defined electron affinity ?

The correct option is B The change in energy when a gaseous atom in its ground state gains an electronThe electron affinity of an atom or molecule is defined as the amount of energy released when an electron is added to a neutral atom or molecule in the gaseous state to form a negative ion.

The correct option is B The change in energy when a gaseous atom in its ground state gains an electron
The electron affinity of an atom or molecule is defined as the amount of energy released when an electron is added to a neutral atom or molecule in the gaseous state to form a negative ion.