Answer:
Copper (Cu)
Atomic Number: 29
Element Category: Transition metal
Electron Configuration: \(3d^{10} 4s^1\)
Sulfur (S)
Atomic Number: 16
Element Category: Reactive nonmetal
Electron Configuration: \(3s^{2} 3p^4\)
Copper Sulfide (Cu\(_{n}\)S\(_{n}\))
Explanation:
Copper sulfides will always vary in composition (0.5 ≤ Cu/S ≤ 2) because their bonds are somewhat covalent and have complicated electronic band structures because of their high degree of delocalization.
