(a(i))[2]
Predict the physical state of nitrogen at -200\,^{\circ}\text{C}. Give a reason for your answer.
(a(ii))[1]
Predict the melting point of arsenic.
(b)[2]
Using the table, explain the differences in structure and bonding between nitrogen and bismuth.
(c)[1]
Antimony, Sb, reacts with chlorine to produce antimony(III) chloride. Write the equation for this reaction.
(d(i))[1]
State the volume percentage of nitrogen in dry air.
(d(ii))[2]
Nitrogen oxides are pollutants in the air. Describe the reactions occurring in a catalytic converter that help remove nitrogen oxides from car exhausts.
(d(iii))[1]
State one additional source of nitrogen oxides in the atmosphere.