Hydrogen sulfide (H2S\text{H}_2\text{S}H2S) is a colorless gas with the characteristic foul odor of rotten eggs. It can be synthesized directly from its elements:
H2+S→H2S \text{H}_2 + \text{S} \rightarrow \text{H}_2\text{S} H2+S→H2SThe electronic configuration of hydrogen is 1.
The electronic configuration of sulfur is 2.8.6.
Draw a dot-and-cross diagram for a molecule of hydrogen sulfide, H2S\text{H}_2\text{S}H2S. Show outer electrons only.
15 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.