4. Moving from left to right, the elements go from highly electropositive metals through metalloids with giant structures to the simple molecular structure of non-metals. Si P4 S8 Cl₂ Ar metalloid

< non metals (simple molecules) > Na Mg Al <--- metals - --> Complete the table of physical properties below by filling in the blank boxes. Typical Metals Non-metals properties Appearance Hardness Electrical conductivity Melting point solids - shiny when cut malleable and ductile high gases, liquids, dull solids poor