Name the three categories in which elements can be normally divided. Give any one property of each element belonging to each category.
Answers:
Metals, non-metal, metalloids.
Metals have lustre / conduct heat / ductile malleable / sonorous / conduct electricity etc.
Non-metals have variety of colours / poor conductors of heat and electricity etc.
Metalloids have properties intermediate between those of metals and non-metals. (any one in each)