Chemistry - Periodic Table - Transition metals overview - Transition Metals vs Main Group Metals
A comparison view. LEFT: Main group metals (Group 1-2) - show Sodium: soft, low melting point (98°C), very reactive, forms only +1 ions, colorless compounds, not a catalyst, low density. RIGHT: Transition metals - show Iron: hard, high melting point (1538°C), moderately reactive, forms +2 AND +3 ion