Electronic Configuration: The distribution and arrangement of electrons in various shells, sub-shells and orbitals is called electronic configuration. Electronic configuration follows three rules. Auf Bau Principle: It states: “Electrons occupy shells in […]
Shapes of Orbitals: Shapes of orbitals are obtained by probability contours. If we plot probability of finding electrons versus distance from nucleus, we see that probability is zero at the nucleus it […]
Do you Know !! What is Quantum Number ? These are certain numbers which are used to locate electron in an atom or in other words these are address of electron. They […]
Heisenberg’s Uncertainty Principle: In 1927, Warner Heisenberg proposed the uncertainty principle. It states: “It is impossible to state both position as well as momentum of electrons accurately and simultaneously” To determine the […]
Important Applications of Broglie’s Hypothesis: De Broglie’s hypothesis is good enough to explain Bohr’s postulates. Bohr’s theory states that electron revolves only in orbits of particular radii and in an orbit […]
Louis de Broglie’s Hypothesis: (Dual nature of radiations) There arose a conflict about the nature of radiations. There were two schools of thoughts: (i) wave nature and (ii) particle nature […]
Inner- Shell Transitions and Characteristic X-Rays: Hydrogen atom has only one shell in ground state. Its energy levels are of the order of few electron volts (ev) ; En = – […]
How X-Rays were discovered ? In 1895, a German Physicist, W. C. Röentgen, discovered X-Rays. He pointed, when high speed electrons are bombarded on a clean metal surface radiation of very short […]
Do you Know !! Atomic Spectrum of Hydrogen : When Hydrogen gas is heated or subjected to electric discharge, its electron moves to higher energy orbits by absorbing energy. Subsequently when electron […]
Wave length (λ) of Radiations emitted during Electron jump: When electron jumps from one orbit to another, energy is emitted or absorbed in the form of radiations which have wave length (λ). […]
