Electron affinity is the ________ change that occurs when an ________ is added a

Question

Electron affinity is the ________ change that occurs when an ________ is added and is a measure of the ________ an atom has for an electron. As one moves down the family, EA ________. The atom is getting larger and an additional ________ is not as noticeable so less of an ________ occurs. As one moves left to right across the series, EA ________. The atom is getting smaller and an additional ________ is more noticeable. In addition, the atom is getting closer to a full ________ sublevel and it is easier to gain an electron. Metals have a ________ EA and will actually ________ energy when an electron is added. This gain in energy would have a ________ value and is ________ because all things in nature move towards ________. Nonmetals have a ________ EA and will actually ________ energy when an electron is added. This loss of energy would have a ________ value and is ________

Explanation / Answer

Last Blank:   The loss (release) of energy would have a negative value (exothermic).

Non-metals release energy when electrons are added to get stable octet configuration (anion) where as energy is required to add electrons to metals (form cations) such energy has positive value.

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