Oxidation is de-electronation whereas reduction is electronation. Oxidants are the substances which oxidise others and reduced themselves. On the other hand reductants are the substances which reduce others and oxidised themselves. The oxidation number of an element in a compound decides its nature to act as oxidant or reductant. Oxidation-reduction occur simultaneously and the overall chemical change is called redox reaction. Redox reactions are of three types: (i) Intermolecular redox reactions, (ii) Autoredox or disproportionation reaction, and (iii) Intramolecular redox reactions.Which of the following show intramolecular redox change : (I) 2KClO_3 rarr 2KCI + 3O_2 (II) (NH_4)_(2) Cr_(2)O_(7) rarrN_(2) + Cr_(2)O_(3) + 4H_(2)O (III) NH_(4) NO_(2) rarr N_2 + 2H_(2)O (IV) 2Cu^(+) rarrCu^(2+)Cu

Oxidation is de-electronation whereas reduction is electronation. Oxid

1.	Oxidation is de-electronation whereas reduction is electronation. Oxidants are the substances which oxidise others and reduced themselves. On the other hand reductants are the substances which reduce others and oxidised themselves. The oxidation number of an element in a compound decides its nature to act as oxidant or reductant. Oxidation-reduction occur simultaneously and the overall chemical change is called redox reaction. Redox reactions are of three types: (i) Intermolecular redox reactions, (ii) Autoredox or disproportionation reaction, and (iii) Intramolecular redox reactions.Which of the following show intramolecular redox change : (I) 2KClO_3 rarr 2KCI + 3O_2 (II) (NH_4)_(2) Cr_(2)O_(7) rarrN_(2) + Cr_(2)O_(3) + 4H_(2)O (III) NH_(4) NO_(2) rarr N_2 + 2H_(2)O (IV) 2Cu^(+) rarrCu^(2+)Cu
Answer» I, II, III I, IV II, III II, IV Solution :It INVOLVES REDOX change of two SPECIES in a MOLECULE .