Why are core electrons not involved in bonding?

Valence electrons occupy the outermost shell or highest energy level of an atom while core electrons are those occupying the innermost shell or lowest energy levels. Generally, valence electrons can participate in the formation of chemical bonding, but core electrons cannot.

What is LCAO approximation of molecular orbital theory?

molecular orbitals …which is known as the linear combination of atomic orbitals (LCAO) approximation, each MO is constructed from a superposition of atomic orbitals belonging to the atoms in the molecule.

What is the principle of Lcao discuss the formation of bonding and antibonding molecular orbitals on the basis of this principle?

L.C.A.O. Principle is involved in the formation of the molecular orbitals according to molecular orbital theory. The energy of the bonding molecular orbital is less than that of the combining atomic orbitals while that of the antibonding molecular orbitals while that of the order (B. O.)

What is LCAO in mot?

A linear combination of atomic orbitals, or LCAO, is a quantum superposition of atomic orbitals and a technique for calculating molecular orbitals in quantum chemistry. In quantum mechanics, electron configurations of atoms are described as wave functions.

How the LCAO approximation gives rise to bonding and anti bonding orbitals?

According to MOT (Molecular Orbital Theory), the molecular orbitals are formed by mixing of atomic orbitals through LCAO (linear combination of atomic orbitals). Statement (b): anti-bonding molecular orbitals are formed by subtraction of wave-functions of atomic orbitals of the same phase.

What are Lcao discuss three conditions for Lcao?

For the formation of the proper molecular orbital, proper energy and orientation are required. For proper energy, the two atomic orbitals should have the same energy of orbitals and for the proper orientation, the atomic orbitals should have proper overlap and the same molecular axis of symmetry.

Why do valence electrons participate in bonding?

The valence electrons are involved in bonding one atom to another. The attraction of each atom’s nucleus for the valence electrons of the other atom pulls the atoms together. As the attractions bring the atoms together, electrons from each atom are attracted to the nucleus of both atoms, which “share” the electrons.

What is LCAO in chemistry class 11?

A linear combination of atomic orbitals, or LCAO, is a quantum superposition of atomic orbitals and a technique for calculating molecular orbitals in quantum chemistry. In a mathematical sense, these wave functions are the basic functions that describe the a given atom’s electrons.