Copper has how many valence electron(s)?

Copper has two valence electrons. In the periodic table, copper is located in Group 11 and has the atomic number 29. Its electron configuration is [Ar] 3d10 4s1, which indicates that it has one electron in the outermost s orbital and ten electrons in the d orbitals.

The valence electrons are the ones that are involved in chemical bonding and reactions. In the case of copper, it's generally considered that the two electrons in the 4s and 3d orbitals can participate in bonding, giving the total of two valence electrons. This unique configuration allows copper to exhibit properties such as good electrical conductivity and malleability, which are important in electrical applications.

Understanding the correct number of valence electrons helps in comprehending how copper interacts with other elements and compounds, which is vital knowledge for anyone entering the electrical field.