4.2.1 Group 7 elements Flashcards
1
Q
What is the structure and bonding of halogens?
A
Halogens have simple structures are covalently bonded.
2
Q
What are properties of halogens?
A
- All are diatomic
- Colours get darker down the group
- MP/BP increases down the group
3
Q
What is the colour of pure fluorine?
A
Pale yellow
4
Q
What is the colour of aqueous fluorine?
A
N/A insoluble in water
5
Q
What is the colour of pure chlorine?
A
Pale green
6
Q
What is the colour of aqueous chlorine?
A
Colourless
7
Q
What is the colour of pure fbromine?
A
Brown
8
Q
What is the colour of aqueous bromine?
A
Yellow/orange
9
Q
What is the colour of pure iodine?
A
Dark grey
10
Q
What is the colour of aqueous iodine?
A
Brown
11
Q
Estimate the colour of pure astatine.
A
Black
12
Q
What is the state of fluorine?
A
Gas
13
Q
What is the state of chlorine?
A
Gas
14
Q
What is the state of bromine?
A
Liquid
15
Q
What is the state of iodine?
A
Solid