Methane molecule A molecule of methane contains four C-C , σ bonds. Orbital picture of methane Bond length and bond angles Ethane Molecule It contains 6 C-H σ bonds and one C-C σ bond. Orbital picture of ethane Bond lengths and bond angle in ethane Ethene molecule The carbon-carbon double bond of ethene consists of a strong … [Read more...] about Shapes Of Simple Organic Compounds
Class 11
Tetracovalency of Covalent Compounds
Compounds like urea, sugars, oils, fats, dyes, proteins, vitamins which were isolated directly or indirectly from living organisms, such as animals and plants were called organic compounds. The branch of chemistry which deal with the study of these compounds was called organic chemistry. Compounds like common salt, marble , alums, vitriols which were isolated from … [Read more...] about Tetracovalency of Covalent Compounds
Silicates
A large number of silicate minerals exist in nature. Some of the important minerals are : feldspar i.e. Albite NaAlSi3O8, zeolites e.g. chabazite Ca2[(AlO2)4 (SiO2)8.H2O, micas [KAl2(Si3AlO10(OH)2] and asbestos [Mg3(Si2O5)(OH)4]. The basic structural unit in silicate is the SiO44- terahedra. The two important man-made silicates are glass and cement. Silicates are … [Read more...] about Silicates
Silicones
Silicones are synthetic organosilicon polymers containing repeated R2SiO units held by Si-O-Si linkages. These compounds have general formula (R2SiO)n where R=methyl or aryl group. Preparation When methyl chloride reacts with silicon in the presence of copper as a catalyst at 570 K , various types of methyl substituted chlorosilanes of formula CH3SiCl3 , … [Read more...] about Silicones
Allotropes Of Carbon
The phenomenon of existence of an element in two or more forms which have different physical properties but identical chemical properties is called allotropy and the different forms are called allotropes. Carbon exists in 2 allotropic forms: 1) Crystalline 2) Amorphous Crystalline form of carbon: 4 allotropes of carbon having well defined crystal structure … [Read more...] about Allotropes Of Carbon