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Transition metals, located in the middle block of the periodic table, are known for their hardness, density, and low reactivity compared to alkali metals. They are excellent conductors of heat and electricity, making them essential in modern applications like electrical wiring. Most have high melting points, except mercury, which is liquid at room temperature. Transition metals are malleable and form compounds with distinct colors, such as copper oxides and salts. These metals are crucial for structural materials and include some of the most valuable elements.

How do transition metals contribute to electrical wiring?

What are some examples of colored salts formed by transition metals?