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

Finding the potential difference between different, Can you help me find th...

Can you help me find the potential difference between different metals in the electrochemical series? For example magnesium and copper? Do I need to write equations?

S Block, What are the physical propeties of S block ?

What are the physical propeties of S block ?

Introduction to nitrogen, Q.Briefly describe about Nitrogen? Ans. ...

Q.Briefly describe about Nitrogen? Ans. Nitrogen is a gas that makes up approximately 79% of the atmosphere. It exists in the form of the diatomic molecule N 2 . In this f

Electrochemistry, migration of ions,relative speed of ions,transport number...

migration of ions,relative speed of ions,transport number,determination of ph from EMF method

Atoms, how did atoms appear

how did atoms appear

Hess law, ?H value obtained for the reaction NH3 + HCl –› NH4Cl using t...

?H value obtained for the reaction NH3 + HCl –› NH4Cl using the thermodynamic data in your lab procedure?

Physical properties of alkyl halides, Physical properties of alkyl halides ...

Physical properties of alkyl halides (1) Physical state: Methoxy methane and methoxy ethane are gases whereas other members are volatile liquid along with pleasant smell.

Solute standard state based on mole fraction, Q. For a solution process in ...

Q. For a solution process in which species B is transferred from a gas phase to a liquid solution, find the relation between Δ sol G 0 (solute standard state based on mole fracti

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