Element E forms a simple molecule with the formula H2E\mathrm{H_{2}E}H2E. Every atom in the molecule has a full outer shell.
Which statement about the atom of E in this molecule is correct?
It has two bonding pairs and three non-bonding pairs
It has two non-bonding pairs of outer electrons
It shares all of its outer electrons with hydrogen
It forms a double bond with each hydrogen atom
53 exam-style questions on Edexcel GCSE Chemistry 2.4 Covalent bonding, covering 2.4.1 Covalent bonding and simple molecules. Each one has a worked solution and a mark scheme showing where the marks go.