Structure of atom

After studying this unit you will be able to
• know about the discovery of electron, proton and neutron and their characteristics;
• describe Thomson, Rutherford and Bohr atomic models;
• understand the important features of the quantum mechanical model of atom;
• understand nature of electromagnetic radiation and Planck’s quantum theory;
• explain the photoelectric effect and describe features of atomic spectra;
• state the de Broglie relation and Heisenberg uncertainty principle;
• define an atomic orbital in terms of quantum numbers;
• state aufbau principle, Pauli exclusion principle and Hund’s rule of maximum multiplicity;
• write the electronic configurations of atoms.



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