Question

(a).What are (i) metals (ii) non-metals and (iii) metalloids? Give two examples each of metal, non-metal and metalloids.
(b).Classify the following into metals, nonmetals and metalloids:
Silicon, mercury, diamond, sulfur, iodine, germanium, sodium, carbon, magnesium, copper, boron, helium

Answer 1

Hint: In the periodic table, we can find a jagged black line beside the right side of table which differentiates the metals and the nonmetals. We can see the metals on the left side of the line other than element hydrogen which is nonmetal, we can find the nonmetals on the right side of the line, and metalloids are found nearby to the line.

Complete answer:
(a).Metals, nonmetals and metalloids have to be explained with two examples of each.
We can say delegate the components as metals, nonmetals, or metalloids. Metals are acceptable transmitters of heat and power, and are malleable (they can be pounded into sheets) and ductile (they can be brought into wire). The vast majority of the metals are solids at room temperature, with a trademark shiny sparkle (aside from mercury, which is a liquid).
We can say nonmetals are poor conductors of heat and power, and are not malleable or malleable; a considerable lot of the basic nonmetals are gases at room temperature, while others are fluids and others are solids.
We can say the metalloids are in between the properties of metals and nonmetals. In their actual properties, they are more similar to the nonmetals, however in specific situations; a few of them can be made to direct conduct electricity. These semiconductors are critical in PCs and other electronic gadgets.
We can give two examples of each as,
(i).Metals: Sodium, Potassium
(ii).Nonmetals: Chlorine, oxygen
(iii).Metalloids: Silicon, Boron

(b).Classification of given elements as metals, nonmetals and metalloids.
In the given set,
Sodium, magnesium, copper and mercury are metals.
Helium, Diamond, sulfur, iodine, and carbon are nonmetals.
Silicon, germanium, and boron are metalloids.

Note:
We have to know that when a metal and nonmetal combines with each other, an ionic compound could be obtained. When a nonmetal and nonmetal combine with each other, a covalent compound is obtained. The ionization energy of metals is low when compared to nonmetals and also metals have low electron affinities when compared to nonmetals.