(a(i))[1]
Use the table to suggest selenium's density at room temperature.
(a(ii))[2]
Use the table to deduce the state of oxygen at $-190\,^{\circ}\text{C}$. Explain your answer.
(b(i))[1]
Describe how the electrical conductivity changes for the Group VI elements.
(b(ii))[1]
A trend appears in the melting points of the Group VI elements. Which element does not obey this trend? Use the table data to explain your answer.
(c)[2]
Use the table to explain how oxygen's structure and bonding are different from those of polonium.
(d(i))[1]
Sulfur dioxide is an atmospheric pollutant. State one source of sulfur dioxide in the atmosphere.
(d(ii))[2]
Describe and explain how sulfur dioxide causes acid rain.