Redox Reactions

IGCSE CIE

Redox Reactions

Reactions containing both reduction and oxidation

Oxidation

Gain of oxygen or loss of electrons or increase in oxidation number

Reduction

Loss of oxygen or gain of electrons or decrease in oxidation number

The oxidation number of elements in their uncombined state is

0

The oxidation number of a monatomic ion is the same as the

Charge of the ion

The sum of the oxidation numbers in a compound is

0

The sum of the oxidation numbers in an ion is equal to the

Charge of the ion

Oxidising Agent

Substance which oxidises another substance and it itself is reduced

Reducing Agent

Substance which reduces another substance and it itself is oxidised

Most electro negative element

Fluorine

2nd Most electro negative element

Oxygen

Elements near ___________ are more electro negative

Flourine