Writing and drawing electronic configuration
Take sodium as an example. Sodium has 11 Subatomic particle, with a negative charge and a negligible mass relative to protons and neutrons.. It has:
- 2 electrons in the first shell
- 8 electrons in the second shell
- 1 electron in the third shell
You can write sodium鈥檚 The order electrons are arranged in different shells. with numbers and commas: 2,8,1
The electronic configuration of sodium can be shown in a diagram. The dots represent electrons. Electrons may be shown using dots or crosses.
A diagram of the electronic configuration of an atom of sodium.