List some characteristic properties that distinguish the metallic elements from the nonmetallic elements.

Some characteristic properties that distinguish metallic elements from nonmetallic elements include: 1. Electrical Conductivity: Metallic elements have high electrical conductivity, while nonmetallic elements have poor electrical conductivity. 2. Thermal Conductivity: Metallic elements have high thermal conductivity, while nonmetallic elements have low thermal conductivity. 3. Appearance: Metallic elements typically have a lustrous appearance, while nonmetallic elements appear dull. 4. Malleability and Ductility: Metallic elements are malleable and ductile, while nonmetallic elements are brittle and lack these properties. 5. Chemical Reactions: Metallic elements tend to lose electrons (forming cations) and react with nonmetallic elements, which tend to gain electrons (forming anions) and form compounds with different properties.