What is The Electron Configuration of Potassium

Answer : Potassium is a 4s series element. The atomic number of potassium is 19 which is equal to the number of electrons present in it. The first electron fills into the 1s orbital which can hold 2 electrons, then fill into the 2s orbital then fill into the 2p orbital which can accommodate 6 electrons then electrons will fill into 3s and 3p, and then the last electron will go into the 4s orbital. Hence, the electronic configuration of potassium is 1s²2s²2p⁶3s²3p⁶4s¹.