Question

What is the reactivity series of metal . List the metals of the reactivity series and write on what basis we are arranging the metals in the reactivity series

Answer 1

the list of metals arrange according to its reaction with other metals from its higher to lower level is known as reactivity series of metal.

the list is:
i)potassium
ii) sodium
iii) calcium
IV) magnesium
v) alluminium
vi) zinc
vii) iron
viii) tin
ix) lead
x) hydrogen
xi) copper
xii) mercury

the metals are arranged according to the reaction with water and Liberation of hydrogen gas on reaction.

Answer 2

Answer:

1 ) .Reactivity series :

It is series of decreasing order of metals' reactivity. Hydrogen is place in middle of series. Above hydrogen metals are more reactive in nature below are less. Metal which is more reactive it displaces a less reactive metal from its salt solution.

2 ) . Some chemical method for extraction :

a ) . In order to obtaining a metal from its  oxides for metals in the high of the reactivity series their oxides are reduced to metals by the process of electrolysis

For instance :

Electrolysis of sodium chloride :

Na⁺ + e⁻  ⇒ Na   [ At cathode ]

2 Cl⁻ ⇒ Cl₂ + 2 e⁻   [ At anode ]

b ) . In order to obtaining a metal from its  oxides for metals in the middle of the reactivity series then metals towards oxides of such metals can be reduced with coke (carbon) which acts as a reducing agent.

For instance :

2 Fe₂O₃ + 3 C  ⇒ 4 Fe + 3 CO₂.

c ). In order to obtaining a metal from its  oxides for metals in the least reactive roasting should be done.