van der waal forces

All molecules (polar and non-polar) exert a weak attraction upon the other, due to the electrostatic attraction of the electrons of one molecule to the nuclei of the other. These forces are known as van der Waals forces. They occur in all kinds of ..

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, ..

. As the hydrogen atoms come closer, the attractive force tends to decrease the potential energy of the system. When the potential energy reaches a minimum value, sharing of electrons take place between the two, resulting in a covalent bond. This stage is represented by the distance 'r o ..

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..

The Van der Waal's forces are responsible for the condensation of noble gases and other gases such as H 2 , O 2 , Cl 2 , CH 4 , etc., which have no residual bonding capacity. In all such cases, solids and liquids are formed through the Van der..

The attractive forces between the instantaneous dipole and instantaneous induced dipoles are called Van der Waal's forces...

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 compoun..

The melting and boiling points of halogens increase with increase in atomic number down the group. Explanation: The forces existing between these molecules are weak Van der Waals forces, which increase down the group. This is also clear from the ch..

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 together by weak ..