Question

According to the aufbau principle,_____.

Answer 1

Answer:

Hi there!

The correct answer to this question is: electrons enter orbitals of lowest energy first.

Answer 2

Answer:

C

Explanation:

Aufbau principle states that the electrons which are present in ground state of fill the atomic orbitals in such a way that the lowest energy levels which are available are filled first before electrons occupying the higher levels.

Hence, From the given options, C is correct which is electron enter orbitals of lower energy first.