C2.4 the halogens Flashcards
1
Q
low what
A
melting and boiling points
2
Q
are halogens conductors of electricity
A
no
3
Q
as you go down, does reactivity increase or decrease
A
decrease
4
Q
why does reactivity decrease
A
because the force of attraction decreases meaning its harder to gain an electron
5
Q
covalent bond
A
shared pair of electrons
6
Q
all halogens form what when react with what
A
covalent bonds, non metals
7
Q
when chlorine is displaced what colour
A
yellow
8
Q
bromine colour
A
brown
9
Q
iodine colour when displaced
A
grey
