Three groups of materials are given below :
(a) The table below compares some properties of metals and non-metals.Write down the missing statements (i) to (iv) :
METALSNON-METALS(i)............Poor conductors of heat.(ii) Malleable............(iii) Form positive ions.......................Form acidic oxides.
(b) How many valence electrons are present in:
(i) metals and (ii) non-metals?
An element belongs to 3rd period and group 13 of the periodic table. Which of the following properties will be shown by the element? (a) Good conductor of electricity (b) liquid, metallic (c) solid , metallic (d) Solid, non-metallic