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

Born haber cycle, Born Haber cycle with example as sodium chloride

Born Haber cycle with example as sodium chloride

Moles, how many grams are there in 1.204 *10^24 atoms of Au?

how many grams are there in 1.204 *10^24 atoms of Au?

Geothermal energy, The power plants at Geysers use a dry steam cycle. The s...

The power plants at Geysers use a dry steam cycle. The steam enters the turbine at 250 o C and 30 bars represented by the point 1 in the steam h-s diagram here below. At the outlet

What transformations take place in photosynthesis, what transformations tak...

what transformations take place in photosynthesis?how does glucose help in the formation of ATP from ADP?

Determine rate of flow, Containers in Illustrations C and D are identical ...

Containers in Illustrations C and D are identical Each container is 3.25'w x 3.25'w x 8.4'l Total capacity of each container 88.725 cubic feet Each container is filled wit

Eudiometry, #question50 ml of a mixture of NH3 and H2 was completely decomp...

#question50 ml of a mixture of NH3 and H2 was completely decomposed by sparking into nitrogen and hydrogen. 40 ml of Oxygen was then added and the mixture was sparked again. After

The maximum number of electrons, The maximum number of electrons in p -orbi...

The maximum number of electrons in p -orbital with n= s, m=1  is: (1) 6        (2) 2       (3) 14       (4) 10 Ans: 2

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