Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
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.
In hydrogen spectrum the different lines of Lyman series are present is : (1 )UV field (2) IR field (3) Visible field (4) Far IR field Ans: UV field
Beilstein test or copper wire test - Halogens A clean copper wire is heated in the Bunsen flame till it does not impart any type of green colour to the flame. The heated side
How are the following conversions carried out? (i) Benzyl chloride to benzyl alcohol, (ii) Methyl magnesium bromide to 2- methlpropan -2-ol,
what is screening effect ?
explain resonance with examples.
Q. What is scientific law and theory? A theory is a description that has been supported by many experiments. Theories declare broad principles of nature. Even though theories a
Complex: A very general definition of complex is, 'A compound that results from the combination of a central atom or ion and a group of atoms/ions/molecules surrounding it'. As
what is perkin reaction?
The formal charge on the hydrogens are The formal charge on all the hydrogens is 0. For the other atoms: (a) Nitrogen has a complete octet and a formal charge of 0. (b) B
(i) Use valence shell electron pair repulsion theory (VSEPR) to predict the shape of the molecule comprising oxygen, nitrogen and fluorine atoms, which has the formula ONF, and whe
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd