GCSE Science | Covalent Bonding Last updated on 29 Jun 2025 group number tells us the number of electrons on the outer shellmove electrons to the middle so that every outer shell is full (2 or 8)hydrogenoxygenwatermethanecarbon dioxideHydrogen H2Oxygen O2H2OCH4CO2 Previous Explain two factors that could increase the price of milk Next Eduqas WJEC A-Level Economics | 20 Mark Question Model Answers
