(a(i))[2]
Use ideas about structure and bonding to explain why magnesium and sulfur have different melting points.
(a(ii))[2]
Use ideas about structure and bonding to explain why magnesium and sulfur differ in electrical conductivity.
(b)[2]
Silicon has a structure like diamond. Explain why silicon has a high melting point.
(c(i))[3]
A 40.5 g sample of a sulfur chloride contains 21.3 g of chlorine. Deduce the empirical formula of this sulfur chloride.
(c(ii))[1]
A relative molecular mass of 135 is given for this chloride. Deduce its molecular formula.