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

Question, Write the alkali metals in increasing order acc to ther atomic ma...

Write the alkali metals in increasing order acc to ther atomic masses

Atoms, what is the gram atomic mass of hydrogen and oxygen?

what is the gram atomic mass of hydrogen and oxygen?

What do you mean by solids non-fat, Q. What do you mean by Solids Non-Fat? ...

Q. What do you mean by Solids Non-Fat? Solid non-fat is an important criterion of milk selection for further processing. Milk solids non-fat would include the nitrogenous subst

The type of orbitals present in fe is, The type of orbitals present in Fe ...

The type of orbitals present in Fe  is : (1) s                       (2) s  and p     (3)  s, p and d            ()s, p, d, and f Ans: s, p and d

Classification of proteins - biomolecules, Classification of proteins -  b...

Classification of proteins -  biomolecules As per to the chemical composition, proteins are categorized into two classes 1. Simple proteins 2. Conjugated proteins

Anode rays, does the nature of the anode rays depend upon the nature of the...

does the nature of the anode rays depend upon the nature of the discharge tube and the nature of the electrode?

Radiometric titration, What is radiometric tiration prinple and procedure o...

What is radiometric tiration prinple and procedure of radiometric titratio

Calculate the molar volumes using molar masses, Q. This 16-part problem ill...

Q. This 16-part problem illustrates the use of experimental data from bomb calorimetry and other sources, combined with thermodynamic relations derived in this and earlier chapters

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