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Electron affinity of an element is defined as the energy released by adding an electron to a gaseous atom of the element. With the electronic configuration of the fluroine atom being [Ne] 2s2 2p5, it needs just one more electron to form the fluoride ion (F-) which has the noble gas structure and is much more stable.

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Q: Why electron affinity of fluorine is large?
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Which has a greater electron affinity fluorine or bromine?

Fluorine has greater electron affinity than bromine, or any other element.


Does Iodine have less electron affinity than fluorine?

Yes. It's true. Chlorine has the highest electron affinity, then Fluorine, Bromine and Iodine


Which has lower electron affinity between oxygen and fluorine?

This element is fluorine.


What is the difference between electron affinity and electron gain enthalpy?

electron affinity is the negative of electron gain enthalpy. for example, the electron gain enthalpy of fluorine is -328, and electron affinity is 328 which is -(-328)


Why does chlorine have more electron affinity than fluorine although it is below fluorine in periodic table?

Generally electron affinity goes up as you go from left to right across the periodic table, and decreases as you go down a column. However, fluorine is an exception -- and the element with the highest electron affinity is chlorine.(Note that the most electronegative element is fluorine however; 'electronegativity' is not exactly the same as 'electron affinity'.)Electronegativity is the ability of an atom in a molecule to draw bonding electrons to itselfElectron affinity is a measure of the energy change when an electron is added to a neutral atom to form a negative ion.The reason that the electron affinity is not as high as might otherwise be predicted for fluorine, is that it is an extremely small atom, and so it's electron density is very high. Adding an additional electron is therefore not quite as favorable as for an element like chlorine where the electron density is slightly lower (due to electron-electron repulsion between the added electron and the other electrons in the electron cloud).

Related questions

Which has higher electron affinity fluorine or chlorine?

Fluorine has higher electron affinity than any other element.


Which has a greater electron affinity fluorine or bromine?

Fluorine has greater electron affinity than bromine, or any other element.


Does Iodine have less electron affinity than fluorine?

Yes. It's true. Chlorine has the highest electron affinity, then Fluorine, Bromine and Iodine


Why would flurine have the highest electron affinity?

Fluorine does not have the highest electron affinity it has highest electronegativity the highest electron affinity is for chlorine atom.


Which has lower electron affinity between oxygen and fluorine?

This element is fluorine.


What is the difference between electron affinity and electron gain enthalpy?

electron affinity is the negative of electron gain enthalpy. for example, the electron gain enthalpy of fluorine is -328, and electron affinity is 328 which is -(-328)


Do Nonmetals with lower electron affinity have higher reactivity?

No. The most reactive non metal, fluorine, has the highest electron affinity.


Is oxygen has more electron affinity than sulfur?

Yes. Oxygen has greater electron affinity than any other element except fluorine.


Halogen with the least-negative electron affinity?

The halogen with the least-negative electron affinity is astatine. Electron affinity and electronegativities decreases down a group. Since astatine is the last halogen located in Group 17 as you move down the column from fluorine, it has the least negative electron affinity.


Why does chlorine have more electron affinity than fluorine although it is below fluorine in periodic table?

Generally electron affinity goes up as you go from left to right across the periodic table, and decreases as you go down a column. However, fluorine is an exception -- and the element with the highest electron affinity is chlorine.(Note that the most electronegative element is fluorine however; 'electronegativity' is not exactly the same as 'electron affinity'.)Electronegativity is the ability of an atom in a molecule to draw bonding electrons to itselfElectron affinity is a measure of the energy change when an electron is added to a neutral atom to form a negative ion.The reason that the electron affinity is not as high as might otherwise be predicted for fluorine, is that it is an extremely small atom, and so it's electron density is very high. Adding an additional electron is therefore not quite as favorable as for an element like chlorine where the electron density is slightly lower (due to electron-electron repulsion between the added electron and the other electrons in the electron cloud).


What elements has the largest electron affinity?

AnswerElectron affinity is the energy released when we add an electron to the outermost orbit of the atom. Halogens are the higher in electron affinity, and chlorine has the higher electron affinity than rest of the halogens. The irregularity in the electron affinity trend between Cl and F is due to the small size of the F atom. Although F definitely has a higher attraction for an electron than Cl (as evidenced by its high electro negativity value), the small size of the F atom means that adding an electron creates significant repulsion. Since electron affinity is an energy measurement, the total energy associated with electron affinity winds up being the energy that is released by the electron binding to the nucleus, minus the energy involved in overcoming the electrical repulsion in the outer shell.This makes the fluoride anion so formed unstable due to a very high charge/mass ratio. Also, fluorine has no d electrons which limits its atomic size. As a result, fluorine has an electron affinity less than that of chlorine.


Is electron affinity of N is greater than F?

No, it is not. Electron affinity follows a trend like electronegativity and hence increases as we move from left to right across a period. So, Fluorine has the highest electron affinity among 1st period elements.