Identify the halogen that has the lowest density at r.t.p. (room temperature and pressure).
State the appearance of bromine when it is at r.t.p.
Give the symbol of the halogen with the highest atomic number and deduce how many occupied electron shells an atom of this element has.
State what the term covalent bond means.
Name one halide ion that bromine molecules are able to displace.
Explain why bromine is able to displace the halide ion in (d)(ii).
Name a halide compound that can be used to test for water.
Finish the dot-and-cross diagram in Fig. 2.1 for the ions in calcium chloride, and give the charge on each ion.
Name one lead(II) compound that can be used in this reaction.
Write the ionic equation for this reaction, and include state symbols.
Name one further insoluble chloride.