Part of the giant ionic lattice structure of magnesium oxide is shown in Figure 1.

Magnesium oxide has a very high melting point of 2852∘C2852^{\circ}\text{C}2852∘C.
Explain why magnesium oxide has such a high melting point.
Practise Edexcel GCSE Chemistry Ionic bonding with exam-style questions for Foundation and Higher tier. 42 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.