Question
Define the terms:
(i) Metals (ii) Non-metals (iii) Metalloids.
Solution
(i) Metals. Metals are generally solids and possess characteristics such as bright lustre, hardness and ability to conduct electricity and heat. These are generally malleable and ductile. For example, copper, iron, gold, silver etc.
(ii) Non-metals. These elements are generally non-lustrous, brittle and poor conductors of heat and electricity. For example, carbon, hydrogen, oxygen etc.
(iii) Metalloids. Metalloids are elements which show properties common to both metals and non-metals. For example, arsenic, antimony, bismuth etc.
