Q.Briefly give the basis for pauling's scale of electronegativity.

Step 1. Electronegativity cannot be measured directly, so Pauling built a numerical scale instead. He started by arbitrarily assigning hydrogen an electronegativity of 2.1 and fluorine 4.0.

Step 2. For any other bonded pair A-B, he calculated the DIFFERENCE in their electronegativities from the 'extra' bond dissociation energy of the real A-B bond compared to what a purely non-polar (average of A-A and B-B) bond would have:

where $E_{AB}, E_{AA}, E_{BB}$ are the bond dissociation energies (kcal) of AB, A2 and B2 respectively. …

State both the arbitrary anchor values (H, F) and the bond-energy-based formula used to e …

• Describing the scale only as 'values from 0 to 4' without explaining how those values are actually derived (b …