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

Reaction of conjugate addition, Reaction of conjugate addition This rea...

Reaction of conjugate addition This reaction is a "conjugate addition" of cyanide ion on a cyclopropane.  Notice that reaction at the least branched carbon of the cyclopropane

Explain collodion, How are the following sole produced (a) Sulphur sol ...

How are the following sole produced (a) Sulphur sol (b) Collodion

Kinetic energy, Overall reaction is H+ + I- +H2O2 -> H2O +HIO. If you wante...

Overall reaction is H+ + I- +H2O2 -> H2O +HIO. If you wanted to increase the rate of the overall reaction, would it be better to increase the concentration of H+ or I-. Why?

Ormeloxifene or centchroman - drugs and medicines, Ormeloxifene or Centchro...

Ormeloxifene or Centchroman Ormeloxifene (Centchroman, Saheli) has as well been developed and tested at the Central Drug Research Institute, Lucknow as a doing well anti fertil

Branched chain polymers - classification of polymers, Branched chain polym...

Branched chain polymers -  Classification of polymers These are polymers where the monomers are connected to make long chains with side chains or branches of dissimilar sizes.

The electronic configuration of copper, The electronic configuration of cop...

The electronic configuration of copper (29 cu) is: (1)1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 6 , 3d 9 , 4s 2   (2) 1s 2 , 2s 2 , 2p 6, 3s 2 , 3p 6 , 3d 10 , 4s 1 (3) 1s 2 , 2s

Hydrocarbon, markonise and anti markonise

markonise and anti markonise

Chemical properties proteins - salt formation, Chemical Properties Proteins...

Chemical Properties Proteins - Salt formation (i) Salt formation : Due  to  existence of  both -NH 2 and -COOH groups in proteins, they make salts along with acids and bases.

Apply kinetic molecular theory to solutions, Q. Can we apply Kinetic Molecu...

Q. Can we apply Kinetic Molecular Theory to Solutions? Ans. The Kinetic Molecular Theory can also be applied to solutions. A solution is a distribution of one or more sub

Pariodik table.., writethe sort farmula of learn the pariodik table.

writethe sort farmula of learn the pariodik table.

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