metals & nonmetals

Acetic acid reacts with strongly electropositive metals like sodium and zinc to give the respective acetate and liberate hydrogen. ..

All elements except hydrogen, which form positive ions by losing electrons during chemical reactions are called metals. Thus metals are electropositive elements. They are characterized by bright lustre, hardness, ability to resonate sound and are excellent conductors of heat an..

Besides the above reactions of chlorine with metals, chlorine also undergoes addition reactions with heated metals like aluminium, zinc, iron, etc. to form their chlorides. Metals with variable valencies always form the chloride of the higher metallic valenc..

Thin foils of metals like sodium, copper, etc. when plunged into a jar of chlorine gas catch fire spontaneously to form their respective chlorides (Fig.14.10). ..

Be, Cd, Co, Mg and Zn - have hcp structure. Al, Ag, Au, Cu, Ni and Pt - have ccp structu..

The progress of the civilization was first benchmarked by man's increasing knowledge and usage of metallic deposits in the earth's crust. Early man used stones, bones and wood to fulfill their requirements of hunting, cooking and buildin..

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