Question

write the condition for the combination of atomic orbitals ​

Answer 1

$\bf\large\underline\red{Answer:-}$

The conditions that are required for a linear combination of atomic orbitals are as follows: Same Energy of combining orbitals – The combining atomic orbitals must have same or nearly same energy. ... Greater the extent of overlap of orbitals, greater will be the nuclear density between the nuclei of the two atoms.

Answer 2

$\huge{Answer:-}$

Conditions for the combination of Atomic Orbitals : Atomic orbitals can be combined linearly which give molecular orbitals only if following conditions are fulfilled.

i. The combining atomic orbitals must have comparable energies.

II. The combining atomic orbitals must have the same symetry along the molecular axis. Conventially z axis is taken as the internuclear axis. So even if atomic orbitals have same energy but their symetry is not same they cannot combine. For example, 2s orbital of an atom can combine only with 20 orbital of another atom, and not with 2p or 2p, orbital of that atom because the symmetries are not same. p, is symetrical along z axis while p, is symetrical along x axis.

iii. The combining atomic orbitals must overlap to the maximum extent. Greaterthe overlap, greater is the electron density between the nuclei and so stronger is the bond formed.