Linear Combination of Atomic Orbitals (LCAO) Method
According to LCAO method, the orbitals are formed by the linear combination (addition or subtraction) of atomic orbitals of the atoms, which form the molecule. This theory is applicable to hydrogen molecule as follows. Consider that hydrogen molecule consists of ..
Linear Combination of Atomic Orbitals (LCAO) Method
According to LCAO method, the orbitals are formed by the linear combination (addition or subtraction) of atomic orbitals of the atoms, which form the molecule. This theory is applicable to hydrogen molecule as follows. Consider that hydrogen molecule consists of two ..
Valence Shell Electron Pair Repulsion (VSEPR) Theory
The VSEPR theory, proposed by R.J.Gillespie and R.S. Nyholmm in 1957, is based on the repulsions between the electron-pairs in the valence-shell of the atoms in the molecule. It was developed to predict the shapes of the molecules in which the atoms are bonded together..
Electromagnetic Radiation and Energy(Planck's quantum theory)
In 1900, Max Planck presented the results of his famous black body radiation experiments, which showed that light has a dual character, behaving like a particle as well as a wave. He gave the Quantum Theory of Radiation explaining electromagnetic radiation and energy. Its main features ..
Laws of Chemical Combination
When substances react, they do so by following certain laws. These laws are called the laws of chemical combination. These formed the basis of Dalton's atomic theory of matt..
Periodic Classification of Elements
In the famous atomic theory of John Dalton (1805), it was suggested that the atoms of an element have a characteristic mass. So, attempts were made to classify elements on the basis of their atomic masse..
Dobereiner's Triads
In the famous atomic theory of John Dalton (1805), it was suggested that the atoms of an element have a characteristic mass. So, attempts were made to classify elements on the basis of their atomic masse..
Summary
According to Dalton's atomic theory, all matter is made up of very small particles called atoms, which cannot be further divided and have independent existenc..
Laws of Chemical Combination
When substances react, they do so by following certain laws. These laws are called the laws of chemical combination. These formed the basis of Dalton's atomic theory of matte..
Avogadro's Hypothesis
Avogadro's Hypothesis - In trying to correlate Dalton's atomic theory with Gay Lussac's law of gaseous volume, Berzelius put forward the hypothesis that equal volumes of all gases contain equal number of atoms under similar conditions of temperature. However,..
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