Exam Focus

🎯 Exam Focus

Frequently Examined

Electronic configuration is tested in almost every paper, often as short questions worth 1-3 marks. Students are commonly asked to draw or write the electronic configuration for a given element, use the configuration to identify the group and period, or explain why elements in the same group have similar properties. A particularly common 3-mark question asks students to use electronic configuration to explain why Group 0 noble gases are unreactive. Higher tier students may be asked to link electronic configuration to ionic charge (e.g., why sodium forms Na⁺).

Edexcel 1CH0: Examined in Paper 1 (1CH0/1). Edexcel uses 2,8,1 dot-and-cross notation; electronic configurations are routinely tested as 1–2 mark questions asking you to write the configuration for a given element and use it to identify its group or period. In Edexcel-style questions, the command word "Suggest" appears frequently — use your chemistry knowledge to apply to an unfamiliar context.