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Periodic trends - Coggle Diagram

- - - - Decreases down the group because the outermost electrons are farthest from the nucleus
        
        increases across the period because same number of electron levels across the period and elevtrons are more strongly attracted to the nucleus
        
        Electron shielding effect
- - - - Increases across the period
        
        More nuclear charge valence electrons are attracted more strongly
- - - - increases across the period due to nuclear charge