Therefore... Cesium is not neutral, because it is not a noble gas. Copper is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. Electrons are negatively charged, while the nucleus has a positive charge due to the protons. However, conventionally, we draw the dots for the two p electrons on different sides. Chemists really only consider the electrons in the s and p orbitals in the energy level that is currently being filled as valence electrons. Chapter 6-chemistry. The chemical symbol for Copper is Cu . The element copper has 11 valence electrons, distributed amongst the outermost d and s orbitals.