Question

Electron affinity is defined as ?

• A. the change in energy when a gaseous atom in its ground state gains an electron
• B. the pull an atom has on the electrons in a chemical bond
• C. the energy required to remove a valence electron from a neutral gaseous atom in its ground state
• D. the energy difference between an electron in its ground and excited states
• E. None of the above

Answer 1

The correct option is A the change in energy when a gaseous atom in its ground state gains an electron

Option A is the correct answer.

Electron affinity is defined as the energy given out by an atom, when an electron is added to that atom in its ground state, to form a negative ion.