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 can a student test for the prescence of a halide ion?
For the reaction 2H2 + O2 -- 2H2O, how do I give an equation for the equilibrium constant in terms of the concentrations of products and reactants involved?
Could you explain why water has a high latent heat of vapourisation?
Describe and explain the difference in base strength between ammonia, primary aliphatic and primary aromatic amines.