ctural isomerism:- Compounds having same molecular formula but different molecular structures.eg:-Butane and Isobutane(C H ) 4 10 b) Covalent bond:-It is a chemical bond in which pairs of electrons are shared between two atoms.eg:-water and diamondc) Hetro atom in a CARBON compound:- It is a compound formed by replacement of carbon and hydrogen by HETEROATOM in a compound.eg:-oxygend) Functional group:- an atom or a group of atoms present in a molecules,which determine the characteristics property of the organic compounds is called functional group.eg:-alcohol(OH)e) AlkaneIt is a organic compounds that consists single BOUNDED carbon and hydrogen atoms.eg:-methane and heptanef) Unsaturated hydrocarbon:-It is a hydrocarbons that have double or triple covalent bonds between adjacent carbon atoms.eg:-alkaneg) homopolymer:-a polymer consists of identical monomer units.eg:-PVC with vinyl chloride.h) Monomer:-It is a simple molecule with two or more binding sites.eg:-glucose,amino acidI) Reduction:-It is a gain of electrons.eg:-iron reacts with oxygenj) Oxydant:-It is a loss of electrons.eg:-METAL reacts with oxygenI HOPE THIS ONE HELPS YOU(◍•ᴗ•◍)