First thirty elements of periodic table
First 30 Elements of the Periodic Table with Electron Configuration First 30 Elements of the Periodic Table with Electron Configuration Atomic Number Element Symbol K Shell L Shell M Shell N Shell 1 Hydrogen H 1 0 0 0 2 Helium He 2 0 0 0 3 Lithium Li 2 1 0 0 4 Beryllium …