Question

It’s stated that a H2 molecule is glued together by a pair of electrons. Now you have read about molecular orbitals in homonuclear diatomic molecules. What is chemical bonding? Why are molecules hold together? (Please use general concept, without resorting to too much math.)(The answer should be no more than 800 words.)

Answer 1

H2 molecule is a diatomic homonuclear in nature. The overlap of two atomic orbitals either in a constructive manner or in a destructive manner forms bonding and antibonding orbitals respectively. The antibonding orbitals are always higher in energy than the bonding orbitals. considering a homoatomic molecular species H_2. One H is having 1 electron in 1s orbital. two such H will come and form antibonding and bonding orbital. total there will be two electrons. two electrons gets resided in the bonding orbital and thus the bond order becomes 1.

Chemical bonding is attraction between the molecules, atoms, ions etc which leads to stable bond and a stable chemical compound.

atoms are held by many factors.

a) ionic forces of interaction: if one atom losses an electron to another atom, then that atom becomes positive in charge and another on becomes negative in charge. thus an ionic bond formes between them.

b) covalent bond: atoms having nearly equal electronegativity will form a bond with the overlap of orbitals of atoms constituted.