Answer :
Final answer:
In atomic structure, the correct order of sublevels by increasing energy, based on the Aufbau principle, is 4s, 3d, 4p. The 4s orbital has a lower energy level than the 3d, which in turn is lower than the 4p orbital.
Explanation:
When we talk about sublevels in Chemistry, it is essential to understand the structure of atoms and the energy levels within atoms. The arrangement of these sublevels in order of increasing energy follows a particular sequence. This sequence is represented by the Aufbau principle, which states that electrons populate atomic orbitals of the lowest available energy levels before entering higher ones.
The correct order of sublevels by increasing energy is actually 4s, 3d, 4p. This is because the 4s orbital has a lower energy level than the 3d orbital, and the 3d orbital has a lower energy level than the 4p orbital. This is the order electron fill-up.
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Answer:
4s, 3d, 4p
Explanation:
(3d,4s,4p) and (4p, 3d, 4s) both are decreasing energy, while (4s,4p,3d) is incorrect order it should be (4s,3d,4p).
