Can someone check my answer. GCSE Tiple science chemistry.Watch
Compare the structure and bonding in sodium chloride and hydrogen chloride.(6)
Sodium Chloride has ionic bonding, Hydrogen chloride has Covalent bonding
Sodium Loses an electron from its outer shell, and chlorine gains that electron so the ions Na-1 and Cl+1 bond to make NaCl (sodium chloride) which makes the compound stable. Hydrogen chloride will share an electron each in a covalent bond. This would make the outer shell on hydrogen 2 and for chlorine 8, making the compound stable.
2) When talking about covalent bonds, note that it is a pair of electrons which is being shared.
3) NaCl is an ionic lattice which has strong bonds.
Those are some things that I can think off from the top of my head, but since it's a 6 marker you'll have to provide 2/3 more points.