Element common to brass and bronze is copper.

Explanation:

Brass and bronze are two metal alloys that are widely used in various applications. Brass is an alloy of copper and zinc, while bronze is an alloy of copper and tin.

1. Brass:

- Brass is an alloy of copper and zinc in varying proportions.
- The proportion of zinc in brass can range from 5% to 45%.
- The addition of zinc to copper imparts several properties to brass such as improved strength, corrosion resistance, and ductility.
- Brass is commonly used in the manufacture of musical instruments, decorative items, plumbing fixtures, and electrical components.

2. Bronze:

- Bronze is an alloy of copper and tin in varying proportions.
- The proportion of tin in bronze can range from 2% to 30%.
- The addition of tin to copper imparts several properties to bronze such as increased hardness, durability, and resistance to wear and corrosion.
- Bronze is commonly used in the manufacture of statues, coins, bearings, and hydraulic components.

Common element:

- The common element in both brass and bronze is copper.
- Copper is the primary metal in both alloys, and the addition of other metals such as zinc or tin changes the properties of copper to create these alloys.
- Copper is a highly conductive metal that is ductile, malleable, and corrosion-resistant, making it an ideal metal for use in various applications.

Conclusion:

In conclusion, the element common to brass and bronze is copper. While brass is an alloy of copper and zinc, bronze is an alloy of copper and tin. Copper is the primary metal in both alloys, and the addition of other metals creates these alloys with different properties suitable for various applications.