Question

4. Place the following orbitals in order of increasing energy:
1s, 3s, 4s, 6s, 3d, 4f, 3p, 7s, 5d, 5p

Answer 1

Answer:

Explanation:

Using the Aufbau's principle, we can sort these orbitals into the right energy levels based on the sequence provided.

Aufbau's principle states that sublevels with lower energies are filled up before those with higher energy levels. The sublevels are not filled up based on numerical order. The sequence is given below:

         1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f 5d 6p 7s 5f e.t.c

The arrangement above is based on increasing strength of the energy levels.

  now we apply this to our problem to give:

     1s < 3s < 3p < 4s < 3d < 5p < 6s < 4f < 5d < 7s

Answer 2

the order of increasing energy of the orbitals would be 1s, 3s, 4s, 3p, 3d, 6s, 5p, 7s, 5d, 4f.

Increasing energy of orbitals

According to rules, the increasing energy of orbitals is as follows:

1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p.

In filling electrons into these orbitals, the lower energy level orbitals are filled before the higher energy level ones.

Thus, in order of increasing energy level, the order of the given orbitals would be 1s, 3s, 4s, 3p, 3d, 6s, 5p, 7s, 5d, 4f.

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