Lithium reacts with fluorine to form lithium fluoride. The electronic configuration of the lithium atom is 2.1 and the electronic configuration of the fluorine atom is 2.7.
Give the electronic configurations of both of the ions formed.
Practise Edexcel GCSE Chemistry Ionic bonding with exam-style questions for Foundation and Higher tier. 42 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.