Determine electron affinity, Chemistry

Assignment Help:

Q. How to Determine Electron Affinity?

Ans.

Electron affinity is the measure of an atom's tendency to form a negative ion.

Electron affinity can be measured by the amount of energy released when an electron is added to an atom to form a negative ion.

When forming a negative ion, an atom undergoes the following reaction::

atom + electron (e-) -> negative ion + energy

For example, consider the reaction by which chlorine forms a negative ion:

Cl + e- -> Cl- + 348 kJ / mole

This means that 348 kilojoules of energy are released when 1 mole of electrons is added to one mole of chlorine atoms. The following animation shows this electron affinity reaction of the chlorine atom:

Electron affinity tends to be high for nonmetals and low for metals. The general trend of electron affinity is to increase from left to right in any period and to decrease from top to bottom in a family of elements. For example, fluorine has a very high electron affinity. It is said to be very electronegative.


Related Discussions:- Determine electron affinity

Element group 13, What are the basic physical and chemical properties of th...

What are the basic physical and chemical properties of this group

Show anomalous behaviour of oxygen, Q. Show Anomalous Behaviour of Oxygen? ...

Q. Show Anomalous Behaviour of Oxygen? Oxygen differs considerably from the rest of the family members. Small size, very high electronegativity and non-availability of d-orbita

Determine the purpose of quenching, Determine the purpose of Quenching ...

Determine the purpose of Quenching Quenching is most generally used to harden steel by introducing martensite, in which case steel should be rapidly cooled through its eutect

Boron, Equivalent Weight

Equivalent Weight

Geochemistry, GEOCHEMISTRY The chemical processes taking place in the c...

GEOCHEMISTRY The chemical processes taking place in the crust are especially important as they have build ores, concentrated mineral deposits that are exploited industrially

Nitro compounds, explain why boiling and meliting points of nitroalkanes th...

explain why boiling and meliting points of nitroalkanes than that of iosmeric alkyl nitrites

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd