Data Zone | Discovery | Facts | Appearance & Characteristics | Uses | Abundance & Isotopes | References 27 Co 58.93 The chemical element cobalt is classed as a transition metal. It was discovered in 1735 by George Brandt. Data Zone Classification: Cobalt is a transition metal Color: bluish-white Atomic weight: 58.9332 State: solid Melting … Continue reading Cobalt Element Facts