1.1 Sub- atomic particles

1.2 Atomic models- Rutherford’s Nuclear model of atom

1.3 Developments to the Bohr’s model of atom

    1.3.1 Nature of electromagnetic radiation.

    1.3.2 Particle nature of electromagnetic radiation- Planck’s

          quantum theory.

1.4 Bohr’s model for Hydrogen atom.

    1.4.1 Explanation of line spectrum of hydrogen.

    1.4.2 Limitations of Bohr’s model

1.5 Quantum mechanical considerations of sub atomic particles.

    1.5.1 Dual behaviour of matter.

    1.5.2 Heisenberg’s uncertainty principle.

1.6 Quantum mechanical model of an atom. Important

    features of Quantum mechanical model of atom.

    1.6.1 Orbitals and quantum numbers.

    1.6.2 Shapes of atomic orbitals.

    1.6.3 Energies of orbitals.

    1.6.4 Filling of orbitals in atoms. Aufbau Principle, Pauli’s

          exclusion Principle and Hund’s rule of maximum multiplicity.

    1.6.5 Electronic configurations of atoms.

    1.6.6 Stability of half filled and completely filled orbitals.