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

Wet test for inorganic salts, what is the basic radical for a salt having a...

what is the basic radical for a salt having a chlorine basic radical?

Determine chromium has the electronic configuration, Chromium has the elect...

Chromium has the electronic configuration 4s 1 3d 5 rather than4s 2 , 3d 4 because: (1) 4s and 3d  have the same energy (2) 4s  has a higher energy than 3d (3)4s 1   is

Which of the following is always a whole number, Which of the following is ...

Which of the following is always a whole number : (1) Atomic weight             (2) Atomic radii     (3) Equivalent weight   (4) Atomic number Ans:  Atomic number

Advantages of icp-aes method, Advantages of ICP-AES method: The wide a...

Advantages of ICP-AES method: The wide applicability of ICP-AES in the quantitative analysis of various materials can be attributed to the following advantages. Rapid a

Explain triene-triol isomer, This compound, 1,3,5-cyclohexanetrione, exists...

This compound, 1,3,5-cyclohexanetrione, exists as its "triene-triol" isomer phloroglucinol because the latter is aroma

Organic, Explain in words why hydroboration leads to anti-Markovnikov addit...

Explain in words why hydroboration leads to anti-Markovnikov addition of hydrogen whereas most electrophilic addtions to alkenes result in Markovnikov addition.

Calculate the heat benzene liquid or toluene liquid, Consider a distillatio...

Consider a distillation column that separates benzene and toluene. 100 moles of an equimolar mixture is fed to the column. The overhead product from the column is fed to a total co

Oxidation, When assigning oxidation numbers and you have to do the math to ...

When assigning oxidation numbers and you have to do the math to find the oxidation number of something in the compound, what are you ultimately trying to get that compound to equal

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