3.4 Magnesium oxide is a white solid with a high melting point.
Explain how the ions are held together in solid magnesium oxide.

When Magnesium reacts with Oxygen,

Magnesium gives up 2 electrons and oxygen takes those 2 electron. In this way they form an ionic bond and their outer shell also become full of electrons.

Now, The ions: Magnesium ion is Mg^2+ and Oxygen ion is O^2-

Note that the ions are opposite charged. As we know, opposite charges attract, they form a lattice where the ions are bonded with a strong ionic bond.

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates