metals non metals and metalloids questions

Like halogens, hydrogen is nonmetallic in natur..

The first four elements namely oxygen, sulphur, selenium and tellurium are non-metals. The non-metallic character is stronger in O and S and weaker in Se and Te. On the other hand, last element is markedly metallic. However, it is radioactive and is only short-lived. ..

Physical Properties of Metals..

Metals are solids at room temperature with the exception of mercury and gallium, which are liquids at room temperatur..

A detailed comparison of properties of metals and non-metals is given in table. Property Metals Non-metals State of matter These are usually solid, except mercury, which is a liquid at room temperature. Gallium and Caesium melt below 30 . So..

We are familiar with the fact that the atoms of all elements, except noble gases, have an incomplete outermost shell. Consequently, most elements are reactive and they try to achieve the stability of the noble or inert gases by electron transfer or by electron sharing. After this combination, the ..

There are 109 elements known at present. 92 elements occur in nature, while the rest are man-made. All materials on the Earth are made of these naturally occurring elements. These are classified into metals, non-metals, and metalloids. The occurrence and extracti..

Electronegative or Non-metallic Character - The tendency of an element to accept electrons to form an anion is called its non-metallic or electronegative character. Elements that have high electron affinity (or high electronegativity) show greater electronegative or non-met..

The tendency of an element to accept electrons to form an anion is called its non-metallic or electronegative character. Elements that have high electron affinity (or high electronegativity) show greater electronegative or non-metallic character. For example chlorine, oxyg..

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