van der waals bonding

In order to understand the origin of these forces, consider two helium atoms very close to each other. The ground state electronic configuration of helium is 1s 2 .Each helium atom is uncharged because its electron cloud is symmetrically distributed around the nucleus. In the most favoured arrang..

Relationship between Critical Constant and Van der Waal's Constants - The relationship between critical constants of the gases and their Van der Waal constants is as follows: (i) V c = 3b (ii) P c = a/27b 2 (iii) T c = 8a/27Rb (iv) The cri..

The relationship between critical constants of the gases and their Van der Waal constants is as follows: (i) V c = 3b (ii) P c = a/27b 2 (iii) T c = 8a/27Rb (iv) The critical compressibility factor Z c is given by, ..

Covalent or metallic bonds, ionic bonds Chemical bonds between atoms in molecules such as H2, CH4, NH3, H2CCH2, N2, Cl2 Electrostatic attraction in salt crystals such as NaCl Inter-molecular forces in a solid and liquid Lewis dot structures - Shape of simple ..

Covalent or metallic bonds, ionic bonds Chemical bonds between atoms in molecules such as H2, CH4, NH3, H2CCH2, N2, Cl2 Electrostatic attraction in salt crystals such as NaCl Inter-molecular forces in a solid and liquid Lewis dot structures - Shape of simple ..

Solids are closely packed condensed states, with their constituent particles (atoms, ions or molecules) held together by strong physical or chemical bonds. These particles show a definite regular arrangement in a long range order. Solids may be broadly categorised into four types, dependi..

>Graphite has carbon atoms arranged in hexagonal parallel layers. This results in a double bond characteristic of graphite; each carbon atom is bonded to three others by a sp 2 covalent bond as well being bonded among the adjacent layers by Van ..

Molecular hydrides are formed by the combination of elements of comparatively higher electronegativity as of p block elements. These bonds are mostly covalent in character with partly ionic character too (for example, in HF). These hydrides, therefore have molecular lattices held togethe..

Characteristics of Covalent Compounds - 1) Covalent compounds consist of molecules and not ions. The molecules do not have any electric charge on them. The molecules are held together by weak forces called Van der Waal's forces . 2) Covalent compounds are either gases,..

The attractive forces between molecules are called intermolecular forces. Intermolecular attractions hold two or more molecules together. Intermolecular attractions can be of the following types: 1) Dipole-dipole interactions 2) London forces (Dispersion forces) 3) Hydrogen bonds. Intermo..