Question

after 3-d sub level is completed filled the differentiating electron enters into which subshell

17 the question

Answer 1

Answer:

According to the Aufbau principle, electrons first occupy lower energy level atomic orbitals in the ground state of an atom or ion before moving up to higher levels. As an illustration, the 1s shell is filled before the 2s subshell.

Explanation:

The 4p orbital will be filled after the 3d orbital, according to the Aufbau principle of electron filling in orbitals.

The salient features of the Aufbau principle are as follows below:

1. The (n+l) rule, which states that the orbital's energy level is defined by the sum of its primary and azimuthal quantum numbers, may be used to identify the sequence in which the energy of orbitals grows.
2. Lower orbital energies are correlated with lower (n+l) values. The orbital with the lower n value is said to have lesser energy associated with it if two orbitals have equal (n+l) values.
3. The orbitals are filled with electrons in the following order: 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p, and so on.

Thus, after the 3d sub-level is completed and filled the differentiating electron enters into 4p subshell.

Hence, the correct option is (2) 4p.

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