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Periodic Table (CH14) - Coggle Diagram
Periodic Table (CH14)
Halogens (Group 17)
Properties
Low M.P and B.P
Are coloured
Trends (Going down group)
Melting point increases
Colour becomes darker (colour intensity increases)
Reactivity decreases
Valence shells further away, harder to gain electrons, as less FOA between electron and proton in nucleus, hence less energy required to overcome.
Halogen salts called halides.
Halide can be displaced by more reactive halogen.
Noble Gases (Group 18)
Unreactive completely
Colourless gases at R.T.P
Monoatomic non-metals
Alkali Metals (Group 1)
Properties
Soft and can be cut easily
Low M.P and B.P
Low density
Trends (Going down group)
Melting point decreases
Reactivity increases
Valence electrons further away, easier to lose, as less FOA between electron and proton in nucleus, hence less energy required to overcome.