Fill in Table 5.1 to give the numbers of protons and neutrons in one atom of each sulfur isotope.
State why these isotopes have the same chemical properties.
State the mass of $6.02 \times 10^{23}$ atoms of $^{34}\text{S}$. Make sure you include units.
State the name of the amount of substance that contains $6.02 \times 10^{23}$ atoms.
Calculate the relative atomic mass of sulfur in this sample, giving your answer to one decimal place.
Finish the dot-and-cross diagram in Fig. 5.1 to show the ions in magnesium sulfide. Include the ion charges.
State why MgS has a high melting point.
State why molten MgS conducts electricity.
Deduce the formula of this acid.
Deduce the formula of the anion in $\text{Na}_2\text{SO}_3$.
State what VII indicates in the name potassium manganate(VII).
State the colour change when this reaction occurs.