i. In the p-block, all the three types of elements, i.e. metals, non-metals and metalloids are present.
ii. A zig-zag line separates the metals on the left side from the non-metals on the right side of the modern periodic table.
iii. The border line elements i.e. Boron (B), Silicon (Si), Germanium (Ge), Arsenic (As), Antimony (Sb), Tellurium (Te) and Polonium (Po), show intermediate properties of metals and non-metals.
iv. These elements which lie along the zig-zag line and show properties of both metals and non-metals are called as metalloids or semi-metals.