Q. 284.0( 2 Votes )
(i) Why does carbon form largest number of compounds? Give two reasons.
(ii) Why are some of these called saturated and the other unsaturated compounds?
(iii) Which one of these two is more reactive and why?
(i) Carbon has the ability to form long, branched chains or ring structures with other carbon atoms. This self-linking capacity is referred to as catenation.
Also carbon has a valency of 4 and combines with 4 other monovalent atoms or shares its outermost electrons with different elements through single, double or triple bonds. The bonds formed are highly strong and stable. Hence carbon forms a large variety of compounds.
(ii) Compounds of carbon which are linked by only single bonds between the carbon atoms are called saturated compounds.
Compounds of carbon having double or triple bonds between the carbon atoms are called unsaturated compounds.
(iii) Unsaturated compounds are more reactive than saturated compounds because of the presence of double or triple bonds present in them. These bonds tend to break in the presence of some reacting species to become saturated compounds which are highly stable. The relative stability of hydrocarbons in the decreasing order is given by:
alkanes > alkenes > alkynes
Rate this question :
Write the molecular formula of first two members of homologous series having functional group – Cl.Xam idea - Science
What do you mean by catenation?All In One Science
How do diamond can be prepared artificially?All In One Science
Draw the structure of diamond.All In One Science
(i) The main constituent of marsh gas is ……….
(ii) In case of a water molecule, hydrogen acquires a ………. configuration.All In One Science
Which allotrope of carbon is soft, greasy and is used as solid lubricant for heavy machinery operating at a high temperature?All In One Science
Diamond is a covalent solid, yet has a high melting point. Why?All In One Science
Give two differences between ionic and covalent compounds.All In One Science
Why is graphite smooth?All In One Science