Group 7 - Halogens
- Created by: LunaShomeiRose
- Created on: 12-03-19 09:27
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- Group 7 - Halogens
- Non-metals with coloured vapours
- Florine - very reactive - poisonous yellow gas
- Chlorine - farily reactive - pisonous desne green gas
- Bromine - dense, poisonous, red-brown volatile liquid
- Iodine - dark grey crystalline solid or purple vapour
- All are molecules (pairs of atoms)
- As you go down group:
- Less reactive (more shells - further distance from nuclues - less attraction - harder to gain electron)
- Higher MP / BP
- Higher relative atomic mass
- Less reactive (more shells - further distance from nuclues - less attraction - harder to gain electron)
- Have seven electrons on outer shell
- Form ion -1 (ionic compounds)
- React similiarly
- Halogens form molecular compounds
- Share electrons (covalent bonds) with other non-metals
- They form ionic bonds with metals
- From 1- ions called halides
- Compounds formed have ionic structure
- From 1- ions called halides
- More reactive halogens displace less reactive
- Can occur between more reactive halogens and aslt of a less reactive one
- Chloine displases bromide and iodide from awueous solution of it's salt
- Can occur between more reactive halogens and aslt of a less reactive one
- Non-metals with coloured vapours
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