Groups and Trends

ShreyaDas
Note by ShreyaDas, updated more than 1 year ago
ShreyaDas
Created by ShreyaDas about 7 years ago
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IGCSE Chemistry (C3 The Periodic Table and Equations) Note on Groups and Trends, created by ShreyaDas on 04/01/2014.

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Page 1

Melting and boiling points increase as you go down the group7 electrons in the outer shell (group 7 duh)gets darker in colour as you go down the groupall diatomic molecules

Chl

Chorine is a toxic gas that cannot be stored easily- reacted with potassium manganate to produce potassium chloride which is then dissolved in water which separates some of the chloride ions into chlorineoverall product= 

halogens with iron wool

Most reactive: fluorineLeast reactive: iodineReactivity decreases as you go down the groupFluorine is the most reactive because it has the least electrions

halogen: element in group 7halide: compound of a halogen and another element

More reactive halogens replace halides

Group 7

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