Carbon & its Compounds
Importance of Carbon 1.All living structures are Carbon based. 2.Earth's Crust has 0.02% Carbon as Carbonates, Hydrocarbons, Coal & Petroleum 3.Atmosphere has 0.03% Carbon as Carbon di-oxide. PETROLEUM Physical Properties of Carbon Compounds 1.Poor Conductor of Electricity (Reason: No formation of ions) 2.Low Melting & Boiling points (Reason: Forces of attraction between molecules is not so strong) What is Reactivity? The tendency of an atom to attain 1.Completely filled outer shell 2.Noble Gas / Octet Configuration Either by Gaining / Losing Electrons. How Carbon forms Compound? Carbon doesn't form a cation (+4) or an anion(-4) as it becomes unstable. Reasons Doesn't form C(+4) as it involves huge amount of energy of ionisation Doesn't form C(-4) as nucleus will not be able to hold to 4 extra electrons. Covalent Bonding Carbon overcomes this problem by covalent bonding through sharing of valence elect...