From the options given below, identify the correct statement about the Aufbau’s Principle:
1
According to the Aufbau Principle, the pairing of electrons in orbitals (p, d, and f) take place after each subshell gets one electron each. Also, all singly occupied orbitals will have parallel spin.
2
According to the Aufbau Principle, the electrons in the ground state of an atom or ion fill in the orbitals from the lower energy level to higher energy level.
3
According to the Aufbau Principle, a maximum of two electrons can be accommodated in an orbital and they must have opposite spin.
4
None is correct.
5
Not Attempted