What are Valence Electrons and Electrical Conductivity ?Valence Electrons DefinitionAn atom is made up of a nucleus containing protons and neutrons, with electrons in shells around it. The nucleus is positively charged, and the electrons are negatively charged. Atoms are electrically neutral because they have equal numbers of protons and electrons.Electrons in an atom are arranged in shells based on their energy levels. The closest shell to the nucleus has the lowest energy, while the farthest s