group 7 halogens
- Created by: Margaret Hobart
- Created on: 07-05-21 12:14
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- group 7 halogens
- trends down the group
- electronegativity decreases
- reactivity decreases
- atomic radius increases
- e- less attracted to nucleus
- harder to gain e- to get full outer shell
- e- less attracted to nucleus
- atomic radius increases
- boiling point increases
- increase in e-
- increase in VDWs
- F2 is yellow gas
- Cl2 is green gas
- Br2 is brown liquid
- I2 is grey solid
- increase in e-
- bond enthalpy decreases
- atomic radius increases
- electrostatic attraction between nucleus and e- decreases
- easier to break covalent bond
- electrostatic attraction between nucleus and e- decreases
- atomic radius increases
- oxidising ability decreases
- atomic radius increases
- e- further from nucleus
- harder to gain e-
- easier to lose e-
- e- further from nucleus
- atomic radius increases
- reducing ability increases
- atomic radius increases
- e- further from nucleus
- harder to gain e-
- easier to lose e-
- e- further from nucleus
- atomic radius increases
- displacement reactions
- Cl2 + 2NaBr -> 2NaCl + Br2
- Br2 + 2NaI -> 2NaBr + I2
- I2 + 2NaCl no reaction
- trends down the group
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