(a) always metals
(b) always non-metals
(c) always metalloids
(d) either metals or non-metals
The three elements having chemical symbols of Si, B and Ge are :
(a) all metals (b) all non-metals
(c) all metalloids (d) Si is metalloid, B is metal and Ge is non-metal
(a) What are metalloids ? Name two metalloids.
(b) Classify the following elements into metals,non-metals and metalloids:
Copper,Sulphur,Aluminium,Oxygen,Silicon,Nitrogen,Germanium,Mercury,Chlorine,Sodium.