Question

Activity -2
The process in which the oxidation number increases is called oxidation
The process in which the oxidation number decreases is called reduction.
.
Reducing agent - The atom / substance which undergoes oxidation
Oxidising agent - The atom / substance which undergoes Reduction
Analyse the following chemical equation and complete the table
2Mg° +0° 2Mgo
The atom whose oxidation number is increased
The atom whose oxidation number is decreased
Oxidised atom
Reduced atom
Oxidising agent
Reducing agent
• Find out the oxidation number of Al in A1,O,​

Answer 1

The atom whose oxidation number is increased : Magnesium

The atom whose oxidation number is decreased : Oxygen

Oxidised atom : Magnesium

Reduced atom : Oxygen

Oxidising Agent : Oxygen

Reducing agent : Magnesium

Oxidation number of Oxygen = -2

Let the oxidation number of Al be x.

2×x+3×(-2) = 0

2x+(-6) = 0

2x = +6

x = +6 ÷ 2

x = +3

Oxidation number of Al = +3