Chemistry of Metals and Alloys

Silicon is a metalloid, but in many contexts, it is classified as a non-metal compared to the other options provided (Magnesium, Iron, Titanium), which are clearly metals.

Metalloids are elements that exhibit properties intermediate between those of metals and non-metals.

Aluminum is a well-known metal, while the others (Hydrogen, Silicon, Oxygen) are non-metals or metalloids.

Mercury is the only metal that is liquid at standard room temperature and pressure.

Metalloids are elements that possess properties intermediate between metals and non-metals. They are classified as elements on the periodic table.

Germanium is a well-known metalloid, situated on the periodic table between metals and non-metals, exhibiting properties of both.

ANS 4.

Nichrome

This compound is Ilmenite. It is a antiferromagnetic substance.

Tungsten is used for light bulb filaments because it has an extremely high melting point, allowing it to glow without melting when heated by electricity.

German silver is an alloy consisting of copper, nickel, and zinc. Despite its name, it contains no silver.

Pital is the Hindi word for the alloy Brass, which is primarily composed of copper and zinc.

Pb is the chemical symbol for Lead, derived from the Latin word 'plumbum'.

Aluminium gallium nitride (AlGaN) is a semiconductor material. It is an alloy of aluminium nitride and gallium nitride. AlGaN is used to manufacture light-emitting diodes operating in blue to ultraviolet region, where wavelengths down to 250 nm (far UV) were achieved. It is also used in blue semiconductor lasers. It is also used in detectors of ultraviolet radiation, and in AlGaN/GaN HEMT transistors.

Noble metals are metals that are resistant to corrosion and oxidation in moist air, unlike most base metals.They tend to be precious, often due to their rarity in the earth's crust. The noble metals are considered to be (in order of increasing atomic number) ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, and gold.