Limitations of Valence Bond Theory: This theory could not explain the perfect geometries of molecule such as Ammonia, Methane, Water etc.... View Article
Applications of Valence Bond Theory: Formation of Hydrogen Molecule: Each hydrogen atom has single electron in is orbital. Is orbital of a... View Article
According to the valence bond theory, electrons in a molecule occupy atomic orbitals rather than molecular orbitals. The atomic orbitals overlap... View Article
When two harmonic waves of equal frequency and amplitude travelling through a medium (say string) in opposite directions superimpose each other,... View Article
During the propagation of a wave through a medium, if the particles of the medium vibrate simple harmonically about their mean positions, then... View Article
Phase Phase defines the position (in terms of distance from mean position) and velocity of a particle oscillating under the influence of a wave.... View Article
It is a kind of wave motion in which the individual particles of a medium execute periodic motion about their mean position along the direction... View Article
As the pulse in figure travels, each disturbed element of the string moves in a direction perpendicular to the direction of propagation. Figure... View Article
In the eighteenth centuries of Thomson very little is known about atom. Thomson was the first to prove that the atom divisible into much smaller... View Article
Rutherford model was based on the number and reflecting angle of the alpha particle (helium ion). The reflecting is because of the repulsion... View Article
Objections to Thomson model of an atom: i) It is only a proposal without any valid experimental observation. ii) Cathode ray experiments with... View Article
Thomson postulated that atom is: i) A spherical ball like substance with an average radius of about 10-10 ii) The positive charge of the atoms... View Article
Answer: Thomson atomic model was proposed by William Thomson in the year 1900. This model explained the description of an inner structure of the... View Article
Thomson passed a very high electric charge in a vacuum tube containing different gases. He observed a flow of identical negatively charged... View Article
The paramagnetic materials will be in its magnetic state after a fixed temperature this particular temperature is called Curie temperature. The... View Article
Magnetic material can be classified as paramagnetic diamagnetic and ferromagnetic substances on the basis of their magnetic susceptibility.... View Article