What is the order for filling the following subshells with electrons?
4d, 4f, 5s, 5p, 6s

Question

Quizplus · Accepted Answer

The order for filling subshells is based on the Aufbau principle, which states that electrons fill orbitals in order of increasing energy. The subshells with lower values of n (principal quantum number) are filled first, followed by subshells of the same n value but increasing l (azimuthal quantum number), as long as they have lower energy. The order for filling subshells is as follows: 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5f, 6p, 7s, 5d, 6f, 7p. Therefore, the correct order for filling the subshells would be: 4d, 5s, 5p, 6s, 4f. Choice C is the only option that follows this order.

What Is the Order for Filling the Following Subshells with Electrons