CHEMISTRY

Sulphur  is a chemical element. It has symbol  S. Atomic number of Sulphur=16 Atomic mass of Sulphur=32 Electronic configuration=1s 2 2s 2 2p 6 3s 2 3p 4 Under normal conditions, sulphur atoms form cyclic octatomic molecules with the chemical formula  S 8 .  Sulphur is a bright yellow, crystalline solid at room temperature. It makes up about 0.1% of the earth crust. It is widely found in combined state as sulphide of iron, zinc, lead, copper and mercury. It is also found in some proteins.                   Extraction of Sulphur Most of the world's sulphur is obtained from the underground deposits. The process involved in the extraction of Sulphur from the underground is known as FRASCH PROCESS.                  Allotropes of Sulphur  The two or more forms of same element having similar chemical properties but different physical...

Organic chemistry is defined as the chemistry of carbon compounds. Apart from the main element, carbon, organic compounds may contain hydrogen, oxygen, and sometimes nitrogen, halogens, phosphorus, and sulphur. Organic compounds are covalent.                           Catenation  Catenation is the combination of the atoms of an element to form straight, branched, or ring-chain compounds. Examples of elements that can catenate include carbon, silicon, boron, and sulphur.            Hybridization in a carbon atom Hybridization is the mixing of two or more orbitals of the same principal quantum number to give new sets of orbitals that are exactly equivalent. The new orbitals are known as hybrid orbitals.                Hybridization of carbon                         ...