Structure of Atom Class-11th

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.