In the Bohr model, electrons fill shells from the inside out. The first shell holds at most 2 electrons; the second holds up to 8. Lithium (3 electrons) is 2, 1; neon (10 electrons) is 2, 8.
In the Bohr model, electrons fill shells from the inside out. The first shell holds at most 2 electrons; the second holds up to 8. Lithium (3 electrons) is 2, 1; neon (10 electrons) is 2, 8.