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Periodic Table - Coggle Diagram

- - - - Strong metallic bonds require more heat energy to break these bonds.
- - - - Physical Properties
        
        Good heat and electrical conductors
        
        Due to delocalised sea of electrons allowig electrons flow through metals.
        
        Soft
        
        Low density
        
        MP and BP decreases down the group
        
        The shielding effect causes the attraction strength of the nucleus to decrease. Therefore, the strength of metallic bond between atoms decreases, needing lower heat energy to melt and boil to break bonds.
      - Chemical Properties
        
        Reactivity increases down the group
        
        Atoms have a strong drive to donate one electron to obtain stable outer shell of electrons. The further the valence electron from the nucleus, caused by increasing number of shells down the group, the stringer the drive to form an ion, +1.
- - - - Physical Properties
        
        Density increases down the group
        
        Boiling point increases down the group
        
        Because of increased number of protons and electrons, the intermolecular forces increases, causing stronger forces between atoms requiring higher heat energy to break these forces.
        
        Forms coloured gases
        
        Fluroine (Yellow gas)
        
        Chlorine (Green gas)
        
        Bromine (Red liquid)
        
        Iodine (Black solid)
      - Chemical Properties
        
        Reactivity decreases down the group
        
        The shielding effect increases down the group, with lesser forces fo attraction between nucleus and valence electrons, having a smaller attraction force for nucleus to accept electrons for stable outer shell.