Electronic Configuration using the Aufbau Principle

Writing the Electron Configuration of Sulphur

• The atomic number of sulphur is 16, implying that it holds a total of 16 electrons.
• As per the Aufbau principle, two of these electrons are present in the 1s subshell, eight of them are present in the 2s and 2p subshell, and the remaining are distributed into the 3s and 3p subshells.
• Therefore, the electron configuration of sulphur can be written as 1s²2s²2p⁶3s²3p⁴.