Question

On the basis of reactivity, in how many groups metals can be classified? Write
names

Answer 1

Answer:

they are classified into 3 groups

Answer 2

For the purpose of extracting metals from the concentrated ores , we can group all metals into following three categories :

1.  metals of high reactivity (or highly reactive)

2. metals of medium reactivity (or moderately reactive )

3. metals of low reactivity (or  less reactive  metals )

metals                                  method of extraction

K,Na,Ca    }             electrolysis of molten chloride or oxide

Mg,A

Zn,Fe,Pb,Cu }           reduction of oxide with carbon

Cu and Hg }             heating sulphide ore in air( reduction by heat alone)

Ag,Au,Pt     }             found in native state( as metals )