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Some generalizations can be made about the electron affinities of certain groups in the Electron affinity is the energy released when an electron is added to neutral gaseous atom forming a univalent negative ion. When halogens get electrons they give up energy. Each halogen has maximum electron affinity in a period but in halogen family, it decreases from fluorine to iodine. The order of electron affinity is, Cl > F> Br > I. In other words, electron affinity is the change in energy when an electron is added to the atom and a neutral atom changes into a negative ion.

Electron affinity increases

The order of electron affinity is, Cl > F> Br > I. In other words, electron affinity is the change in energy when an electron is added to the atom and a neutral atom changes into a negative ion. Periodic trend of electron affinity across a period – As we move from left to right in a period, electron affinity gradually increases. The electron affinity increases when the atomic radius decreases. In which parts of the table do you find the largest and smallest atoms? The largest atoms are in the bottom left and the smallest atoms are in the top right.

Ionization Energy Electron Affinity Atomic Radius Ionic Radii

2007-11-26 The electron affinity increases across a period while it decreases down a group. The zero group elements have the lowest electron affinity values. Halogens posses highest electron affinity in the periodic table. In halogens chlorine posses highest electron affinity in the periodic table.

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Electron affinity is a quantitative measure of that energy change. Electron affinity increases from left to right across the periodic table. 2019-05-09 2021-03-10 Electron affinity deceases as you do down a column because of the increase in atomic radius from the addition of a new valence electron shell. Electron affinity increases as you go right across a row because of the increase in protons leading to a decrease in atomic radius. Atomic Radius. The atomic radius of an element is half of the distance between the centers of two … 2017-07-09 Electron affinity values generally increase across the period left to right and decrease down the group top to bottom.

This is due to In general, electron affinity decreases (or becomes less negative) from top to bottom down a group. This change is not Electron affinity generally increases across a period in the periodic table and sometimes decreases down a group.
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The exception First electron affinity increases across the period Moving from left to right across a period, the number of protons and electrons increases while the number of energy shells stay same.

Electron affinity is the atom's likely hood of gaining an electron.
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The structure and radiative lifetimes of negative ions

But the effect if increase in atomic size dominates the increase in nuclear charge. Hence, the added electron experiences less attraction by the nucleus. In general, electron affinity increases (or becomes more negative) from left to right across a period.

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2015-07-20 · An increase in atomic size leads to a decrease in electron affinity because the incoming electron is added further away from the nucleus, i.e. on a higher energy level. As you go down a group, the outermost electrons are located further and further away from the nucleus. This implies that they feel less pull coming from the nucleus.