Answer :
Final answer:
The correct order for placing the given sublevels in order of increasing energy is 1s, 2p, 3s, 4s, 3p, 4p, 4d, 4f, which corresponds to Option C.
Explanation:
To place the given sublevels in order of increasing energy: 1s, 2p, 3s, 3p, 4s, 4p, 4d, 4f, we need to consider the Aufbau principle which guides the sequence that electrons fill subatomic orbitals. According to the rules for assigning electron orbitals, we start filling the sublevels with the lowest principal quantum number (n) and move to the next available sublevel following an increasing energy trend.
The correct order should reflect that as we move up in principal quantum numbers, the energy of sublevels also increases, but there are overlaps due to electron repulsions and sublevel distinctions (s, p, d, f). The correct order based on the principles mentioned should be:
1s, 2p, 3s, 4s, 3p, 4p, 4d, 4f
This order takes into account that the 4s orbital is filled before the 3d (which is not listed in our sublevels), and subsequently we follow the numerical order along with the order of s < p < d < f within the same principal quantum level. Therefore, the correct answer to the question is:
Option C) 1s, 2p, 3s, 4s, 3p, 4p, 4d, 4f
