Give a short account of pauling's scale of electronegativity
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Electronegativity:
The relative tendency of an atom to attract the shared electron pair towards itself in a hetero diatomic molecule is called as Eletronegativity.
It has no units since it is a relative property.
Pauling Scale :
An Arbitrary value of 4.0 has been assigned to Fluorine which is most electro negative element and the electro negativity of other elements have been calculated against this standard by the application of formula .
if bond energies are taken in kJ /mole
Xa-Xb=0.102 [Ea-b - 1/2 [Ea-a +Eb-b] ]¹/²
Where xa and Xb are eletronegativities of two atoms a and b.
Ea-b, Ea-a, Eb-b are the bond energies of molecules AB.
The relative tendency of an atom to attract the shared electron pair towards itself in a hetero diatomic molecule is called as Eletronegativity.
It has no units since it is a relative property.
Pauling Scale :
An Arbitrary value of 4.0 has been assigned to Fluorine which is most electro negative element and the electro negativity of other elements have been calculated against this standard by the application of formula .
if bond energies are taken in kJ /mole
Xa-Xb=0.102 [Ea-b - 1/2 [Ea-a +Eb-b] ]¹/²
Where xa and Xb are eletronegativities of two atoms a and b.
Ea-b, Ea-a, Eb-b are the bond energies of molecules AB.
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Linus Carl Pauling proposed this scale of measuring electronegativity of an atom. The scale uses the bond dissociation energies of various elements joined together by covalent bonds to measure electronegativity. Fluorine, the most electronegative element, is assigned a electronegativity value of 4, and the electronegativity values of other elements is calculated with respect to Fluorine.
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