What is the atomic number for copper?

The atomic number of an element is defined as the number of protons found in the nucleus of an atom of that element. Copper is a chemical element with the symbol Cu, and it is a transition metal that is well-known for its excellent electrical conductivity and use in various applications, including electrical wiring and plumbing.

The atomic number for copper is 29, meaning it has 29 protons in its nucleus. This information is significant in chemistry and materials science because the atomic number determines the chemical behavior of the element and its placement on the periodic table.

Copper falls within the category of transition metals, which are known for their ability to form various oxidation states and complex ions. Understanding the atomic number is fundamental as it relates to the element's identity and its interactions in chemical reactions. Thus, identifying copper's atomic number as 29 supports foundational concepts in chemistry and electrical systems, particularly in applications that involve metals and their conductive properties.