Describe the reaction of various metals in activity series with oxygen

1.	Describe the reaction of various metals in activity series with oxygen.
Answer» 1. The metals which are at the bottom of activity series have very low reactivity and do not burn or oxidase even on surface. Eg : Ag, Pt, Au. 2. The metals like Pb, Cu and Hg do not burn but only form a surface layer of oxide, i.e., PbO, CuO, HgO. 3. The metals like Al, Zn, Fe react with oxygen to form respective oxides. 4. The metals like Ca and Mg burn with decreasing vigorousity to form oxides. 5. The metals like K, Na burn vigorously to form Na₂O, K₂O in limited supply of oxygen but form peroxides in excess of oxygen.

Describe the reaction of various metals in activity series with oxygen.

Answer»

1. The metals which are at the bottom of activity series have very low reactivity and do not burn or oxidase even on surface.

Eg : Ag, Pt, Au.

2. The metals like Pb, Cu and Hg do not burn but only form a surface layer of oxide, i.e., PbO, CuO, HgO.

3. The metals like Al, Zn, Fe react with oxygen to form respective oxides.

4. The metals like Ca and Mg burn with decreasing vigorousity to form oxides.

5. The metals like K, Na burn vigorously to form Na₂O, K₂O in limited supply of oxygen but form peroxides in excess of oxygen.