A) Electronegativity
B) Electron affinity
C) Ionisation energy
D) Excitation potential
Correct Answer: A
Solution :
The tendency of an atom to attract the bonding or shared pair of electrons towards its own side in a covalent bond is called electronegativity. It is a unitless quantity. Pauling scale and Mulliken scale are used to determine electro negativity. It increases in a period from left to right and decrease down a period. Fluorine is the most electronegative element of periodic table. (\[EN\approx 4.0\]according to pauling scale) Electron affinity and ionisation energy are expressed in kJ/mol and electron volt / atom
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