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

Electronic configuration of ferric ion is, Electronic configuration of ferr...

Electronic configuration of ferric ion is: (1) [Ar] 3d 5                           (2) [Ar] 3d 7            (3) [Ar] 3d 3           (4) [Ar] 3d 8 Ans:  [Ar] 3d 5

State the term- solubility, State the term- solubility Solid solutions ...

State the term- solubility Solid solutions are made of a host, the solvent or matrix) which dissolves the solute (minor component). The ability to dissolve is known as solubili

Cyrogenic technology, what is cyrogenic technology ?? explain with definati...

what is cyrogenic technology ?? explain with defination please

An electron has principal quantum number, An electron has principal quantum...

An electron has principal quantum number 3. The number of its (i) sub-shells and (ii) orbitals would be respectively: (1) 3 and 5            (2) 3 and 7    (3) 3 and 9

What is dielectric strength, What is dielectric strength Dielectric st...

What is dielectric strength Dielectric strength-  It's the maximum voltage/field gradient (voltage per unit thickness) which the dielectric can withstand without failure/brea

Milikan problem, A student recreates the milikan oil drop experiment and ta...

A student recreates the milikan oil drop experiment and tabulates the relative charge of oil drops in terms of a constant a. Find the charge of a Drop 1. A Drop 2. 3/2 a Drop

Need of tar, If you have not used tar before, try this sequence to makeanar...

If you have not used tar before, try this sequence to makeanarchive ofyour llast project: %cd;tar cf llast.tar llast %tar tfv llast.tar The first line m vesyou to your hom

Draw a two-dimensional model of a closed-packed assembly, Draw a two-dimens...

Draw a two-dimensional model of a closed-packed assembly of spheres. Change this model into a three-dimensional one. How many dissimilar possibilities are there of stacking a)

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