Question

Formation of molecular orbitals linear combination of atomic orbitals

Answer 1

The given conditions should be satisfied by atomic orbitals to form molecular orbitals:

(a) The combining atomic orbitals must have the same or nearly the same energy. This means that in a homonuclear molecule, the 1s-atomic orbital of an atom can combine with the 1s-atomic orbital of another atom, and not with the 2s-orbital.

(b) The combining atomic orbitals must have proper orientations to ensure that the overlap is maximum.

(c) The extent of overlapping should be large

Answer 2

Answer:

axis.

π−πmolecularorbital= The bonding electron density lies above and below, or in front and in back of the bonding axis, with no electron directly on the bonding axis, since 2p orbitals do not have any electron density at the nucleus,

σ−σmolecularorbital=Shared electron density is directly between the bonding atoms, along with the bonding axis. Electrons usually occupy these orbitals. A sigma bond is always the first bond formed between two atoms.