Write the chemical equation showing how lithium reacts with nitrogen.
Finish the diagram so that the electronic structure of the nitride ion is shown. Include the charge on the nitride ion.
Using the bond energies provided, calculate the energy change for the reaction of nitrogen with fluorine.
Using your answer to (i), determine whether this reaction is endothermic or exothermic, and justify it.
Complete the dot-and-cross diagram to show the electron arrangement in a molecule of $\text{NF}_3$. Use dots to represent electrons from nitrogen and crosses to represent electrons from fluorine. Show only the outer electrons.
Explain, using attractive forces, why lithium nitride has a much higher melting point than nitrogen trifluoride.
Calculate the mass percentage of nitrogen in ammonium nitrate.
State one agricultural use of ammonium nitrate.
State the name of a compound that can displace ammonia from ammonium nitrate.
Define what is meant by the term base.
Suggest a pH value for aqueous ammonia.