Answer:
See explanation
Explanation:
Electronegativity is an idea put forward by Linus Pauling to explain the fact that in a molecule, one atom may attract the shared electrons of the bond closer to itself than the other.
Hence electronegativity is defined as the power of an atom in a molecule to attract electrons to itself.
Pauling originally described electronegativity as a relative quantity. It depends on the electronegativities of the atoms in the molecule. However, some methods have sought to measure the absolute electronegativity of a free atom.
A bond is polar when the atoms that make up the bond have a significant difference between the atoms of the molecule.
However, a molecule may possess polar bonds but may not have an overall dipole moment owing to the shape of the molecule.
For instance, CCl4 has four polar C-Cl bonds but the overall molecule is non polar because due to the fact that the molecule is tetrahedral in shape and highly symmetrical hence the individual dipoles cancel out.
