Difference between non metal and metalloid.

Non metal

• They occupy the right hand side of the Periodic Table.
• Most non-metals are brittle and are not malleable or ductile.
• At room temperature, they are usually solids or gases.
• They usually have low boiling and melting points (except carbon and boron).
• They are poor conductors of heat and electricity.
• They are usually less dense when compared to metals.
• They tend to gain electrons during chemical reactions.

Metalloid

• Metalloids exhibit some properties of metals as well as of non-metals. Hence, they are also known as semi-metals.
• Boron, silicon, germanium, arsenic, antimony, and tellurium are the most commonly recognized metalloids.
• These elements run diagonally across the Periodic Table.
• They may have a metallic or dull appearance.
• They are usually brittle and are fair conductors of electricity.
• They may gain or lose electrons during chemical reactions.
• They form alloys with metals.
• They are used as catalysts, biological agents, flame retardants, alloys and semiconductors in industries due to their unique properties