Question

State the Modern Theories for the formation of Chemical Bonds? Briefly
explain any 2 theories only.

Answer 1

Answer:

For the formation of a covalent bond, a half – filled atomic orbital of one atom overlaps with the half – filled atomic orbitals of another atom. These atomic orbitals belong to the outermost shell of the atoms. A covalent bond is formed by the overlapping of atomic orbitals having electrons with opposite spins.

Answer 2

───────────────────

★ Chemical Bond :-

A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bonds.

───────────────────

★ Theories Of Chemical Bond :-

The two theories are similar in that both assume that :

• Bonds occur due the sharing of electrons between atoms.
• The attraction of bonding electrons to the nuclei of the bonded atoms leads to lower energy, and therefore the formation of a bond.
• Two types of bonds can form (sigma and pi)

───────────────────