(a)[1]
State how many neutrons are in $^{35}_{17}\text{Cl}$.
(b)[1]
State the number of electrons in $^{35}_{17}\text{Cl}^-$.
(c)[1]
$^{39}_{19}\text{K}$ is the complete symbol for one isotope of potassium. Suggest the complete symbol for a different isotope of potassium.
(d)[1]
Describe how a potassium ion, $\text{K}^+$, is made from a potassium atom, K.
(e(i))[2]
Explain why potassium chloride melts at a high temperature.
(e(ii))[2]
Predict two further physical properties of potassium chloride.