(a)[3]
Define what is meant by proton number, and nucleon number.
(b)[1]
Why is the $^{1}_{1}\text{H}$ hydrogen atom the only atom whose proton number is the same as its nucleon number?
(c)[6]
Fill in the table to give the numbers of protons, neutrons and electrons in the atoms and ions shown.
(d(i))[1]
Write the formula for the compound produced from fluorine and magnesium.
(d(ii))[1]
Write the formula for the compound produced from Sr$^{2+}$ and P$^{3-}$.