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

Describe hall effect and uses of hall effect, Describe Hall Effect? Briefly...

Describe Hall Effect? Briefly discuss physical origin and uses of Hall Effect? Ans: If a conducting bar is placed in a magnetic field B ⊥ to its axis and if a current flow

Explain colligative properties of solutions, Q. Explain Colligative propert...

Q. Explain Colligative properties of Solutions? Colligative properties  of solutions are those properties which depend on the concentration of the solution rather that the ty

Soda lime test - nitrogen, Soda lime test - Nitrogen A pinch of an org...

Soda lime test - Nitrogen A pinch of an organic compound is heated strongly along with soda lime (NaOH + CaO) in a test tube. If ammonia gas acts, it depicts nitrogen.

Radius of the first bohr''s orbit of hydrogen atom, Radius of the first Boh...

Radius of the first Bohr's orbit of hydrogen atom is: (1)1.06 Å                           (2) 0.222 Å (3) 0.28 Å                           (4)0.53A Ans: 0.53 Å

Analysis, what is chemical shift?

what is chemical shift?

Hardness of water, Why does calcium sulphate form scales in high pressure b...

Why does calcium sulphate form scales in high pressure boilers

Cycloalkanes, Why cyclo propane is more stable than cyclohexane

Why cyclo propane is more stable than cyclohexane

Objectives-purchase of alcohol and its stock maintenance, Objectives: Afte...

Objectives: After doing this exercise you will be able to: 1 . Fill-up a F-22 form or write an application for obtaining the license permit for alcohol, 2 . Give justifica

For d electrons, For d electrons, the azimuthal quantum number is: (1) ...

For d electrons, the azimuthal quantum number is: (1) 0        (2) 1        (3) 2        (4) 3 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