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

Show multiplying quantities written in scientific notation, Q. Show Multipl...

Q. Show Multiplying Quantities Written in Scientific Notation? Multiplying Quantities Written in Scientific Notation Solve the following problem. (2 * 10 14 cm) * (9 *

Identify the formula and melting point of hydrate, Identify the formula and...

Identify the formula and melting point of hydrate? Iron (III) chloride forms various solid hydrates, all of which melt congruently. Table lists the temperatures t of aqueous so

Titration - volumetric analysis, Titration - Volumetric analysis The pr...

Titration - Volumetric analysis The procedure of addition of the known solution from the burette to the measured volume of solution of the substance to be calculated until the

What is optical isomerism, Isomers, which vary in the rotation of the plane...

Isomers, which vary in the rotation of the plane polarized light, are known as Optical Isomerism.

Dalons Law Practice Problems? , Hello,">http://misterguch.brinkster.net/WKS...

Hello,">http://misterguch.brinkster.net/WKS001_033_418188.pdf Hello, I''m Ronnie. I don''t know how to do problem number 1. Could you help me with just this one?

Benefits of flame photometry, Benefits of flame photometry: The subseq...

Benefits of flame photometry: The subsequent are the main advantages of flame photometry. It gives high sensitivity and high reliability for the determination of elemen

Physical properties of trihydric alcohols, Physical properties of Trihydric...

Physical properties of Trihydric alcohols (a) Trihydric alcohol is an odourless, viscous, colourless and hygroscopic liquid. (b) Trihydric alcohol has high boiling point tha

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