Use the table to estimate the density of liquid chlorine and the boiling point of iodine.
Describe how the atomic radius of the halogens changes down the group.
State the physical state of bromine at $50^\circ\text{C}$. Give a reason for your answer.
Complete the word equation for bromine reacting with an aqueous potassium salt to produce iodine and a different potassium salt.\n\nbromine + [BLANK] $\rightarrow$ iodine + [BLANK]
Explain, using the reactivity of the halogens, why chlorine does not react with aqueous sodium fluoride.
Balance the equation for fluorine reacting with ammonia.\n\n$\ldots \text{NH}_3 + \ldots \text{F}_2 \rightarrow \text{N}_2 + 6\text{HF}$
A fluorine compound has the formula XeO$_3$F$_2$. Complete the table to work out the relative molecular mass of XeO$_3$F$_2$.
The compound XeO$_3$F$_2$ readily undergoes reduction. What does the term reduction mean?