Halogens / Group 7
- Created by: SimranS
- Created on: 14-05-16 20:03
Fullscreen
Characteristic Physical Properties:
-diatomic molecules
-boiling point + melting point increases down group (stronger induced dipole-dipole forces)
Redox Reactions:
-gains 1 electron; forms 1- ions
-oxidising agent
Reactivity of halogens:
-less reactive down group
-atomic increases
-outer electrons shielded more
-halogens displace less reactive halides
Displacement reaction:
-Cl displaces Br & I
-Br displaces I
-I has no reaction
Test for halides:
1) Add dilute Nitric acid
2) Add Silver Nitrate solution (Aq)
-silver halide precipitate formed
-White = Cl-
-Cream = Br-
…
Comments
No comments have yet been made