Calcium phosphide is an ionic compound with the formula Ca3P2\text{Ca}_3\text{P}_2Ca3P2, consisting of calcium ions (Ca2+\text{Ca}^{2+}Ca2+) and phosphide ions (P3−\text{P}^{3-}P3−).
The atomic number of phosphorus is 15.
What is the electronic configuration of the phosphide ion (P3−\text{P}^{3-}P3−) in calcium phosphide?
2.8.2
2.8.5
2.8.8
2.8.8.2
32 exam-style questions on Edexcel GCSE Chemistry 2.3 Ionic bonding, covering 2.3.1 Ions and the formation of ionic bonds, 2.3.2 Naming and deducing formulae of ionic compounds, and 2.3.3 Giant ionic lattices. Each one has a worked solution and a mark scheme showing where the marks go.