Group 7, Halogens Flashcards
1
Q
toxic . . .
A
non metals
2
Q
melting and boiling point
A
low
3
Q
what type of molecules?
A
diatomic via covalent bonding
4
Q
reactivity
A
high
5
Q
reactivity increases as you go . . .
A
up
6
Q
reacts with non metal
A
share electrons to gain electrons
7
Q
reacts with metals
A
gain electron to form ion
8
Q
displacement
A
potassium displaces, halogen left in solution as aqueous molecule, colour change
