What is the electronic configuration for the sodium ion, Na+ ?
1s2 2s2 2p6
Na+ has +1 positive charge and therefore it has lost an electron.It loses its one electron in its 3s orbital as that electron is at the highest energy - highest energy electrons are the first to be lost.
Related Chemistry A Level answers
All answers ▸How does pH relate to pKa?
What is the difference between an ionic lattice and a metallic lattice?
When both sodium and Hydrochloric acid are added to a test tube, what will be observed?
Explain trend in why the ionisation energies increase across the period