State the name used for Group VII elements.
Explain why Group VII elements show similar chemical properties.
Complete Table 2.1 to show the colour and state at r.t.p. of some Group VII elements.
State the name given to the numbers 79 and 81 in these bromine isotopes.
Complete Table 2.2 to show the numbers of protons, neutrons and electrons in the bromine atom and ion shown.
Table 2.3 gives the relative abundances of the two naturally occurring isotopes of bromine. Calculate the relative atomic mass of bromine to one decimal place.
Write the symbol equation for the reaction between chlorine and aqueous potassium bromide.
State why chlorine does not displace fluorine from aqueous sodium fluoride.
Describe what is observed when aqueous silver nitrate is added to aqueous sodium chloride.
Write the ionic equation for the reaction between aqueous silver nitrate and aqueous sodium chloride. Include state symbols.