The elements chlorine, bromine and iodine are part of group 7 in the periodic table.
halogen | appearance |
chlorine | green gas |
bromine | red-brown liquid |
iodine | grey solid |
Figure 10
Astatine is the element below iodine in group 7.
Predict the appearance of astatine.
Explain how displacement reactions can be used to show the reactivity of these three elements.
Higher Only
When iron wool is heated in bromine vapour, it reacts to form iron bromide.
In an experiment, 5.60 g of iron reacted exactly with 24.0 g of bromine, Br2
[relative atomic masses: Fe = 56.0, Br = 80.0]
Determine, using this information, the balanced equation for the reaction between iron and bromine.
You must show your working.
(4)
When iron reacts with bromine, bromide ions are formed.
Explain the type of reaction bromine atoms undergo when they are converted to bromide ions.
(2)
Did this page help you?