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 ▸Describe briefly how you would show that manganese(II) ions catalyse the reaction between manganate(VII) ions and ethanedioate ions, in dilute sulphuric acid.
Why does water have a higher boiling point than methane?
Explain in terms of bonding and structure the properties of graphite given that it is a good conductor, soft and has a very high melting point
How does a catalyst and increasing temperature affect the rate of reaction?