Question

what is electron affinity?

Answer 1

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⚫ the amount of energy liberated when an electron is added to a neutral atom to form a negatively charged ion. The electron affinities of atoms are difficult to measure, hence values are available for only a few chemical elements, chiefly the halogens. These values were obtained from measurements of heats of formation and lattice energies of ionic compounds of the elements

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Answer 2

HEY''-------DEAR'----YOUR'--:-) :-) :-) :-) ''-----ANSWER-----:-) :-) :-)




This property is measured for atoms and molecules in the gaseous state only, since in a solid or liquid state their energy levels would be changed by contact with other atoms or molecules. A list of the electron affinities was used by Robert S. Mulliken to develop an electronegativity scale for atoms, equal to the average of the electron affinity and ionization potential.[2][3] Other theoretical concepts that use electron affinity include electronic chemical potential and chemical hardness. Another example, a molecule or atom that has a more positive value of electron affinity than another is often called an electron acceptor and the less positive an electron donor. Together they may undergo charge-transfer reactions.


:-) :-) :-) :-) :-) In chemistry and atomic physics, the electron affinity (Eea) of an atom or molecule is defined as the amount of energy released or spent when an electron is added to a neutral atom or molecule in the gaseous state to form a negative ion.[1]

X + e− → X− + energy
In solid state physics, the electron affinity for a surface is defined somewhat differently (see below).:-) :-) :-) :-) -----:-) :-) :-) :-) :-)


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