(a)[5]
Describe this sulfur atom by stating where the electrons, neutrons and protons are located in the atom; the numbers of neutrons and protons; and the electronic configuration.
(b(i))[1]
State one harmful effect of sulfur dioxide in the air.
(b(ii))[2]
Complete the symbol equation for the reaction between sulfur dioxide and magnesium: $\ldots + 2\text{Mg} \rightarrow \ldots\text{MgO} + \text{S}$.
(c)[1]
Work out the molecular formula of this compound.
(d)[2]
A different sulfur compound has the formula $\text{Na}_2\text{S}_2\text{O}_7$. Fill in Table 5.1 to work out the relative formula mass of $\text{Na}_2\text{S}_2\text{O}_7$.