Question

Which of these periods contain elements with electrons in s, p, d, and f orbitals?
A. periods 1–3
B. periods 1-4
C. periods 3-5
D. periods 6-7

Answer 1

I think the correct answer from the choices listed above is option D. The periods that would contain elements with electrons in s, p, d, and f orbitals are  periods 6-7. Hope this answers the question. Have a nice day. Feel free to ask more questions.

Answer 2

Answer: option D. periods 6-7.

Explanation:

1) Period 1 has two elements. Those are the elements with 1 and 2 electrons. They, then, fill the two 1s orbitals.

⇒ Only s orbitals.

2) Periods 2 and 3, contain 8 elements each.

The 8 elements on the period 2 fill the two 2s and the six 2p orbitals.

The 8 elements on the period 3 fill the two 3s and the six 3p ortitals.

⇒ Only s and p orbitals.

3) The periods 4 and 5 contains 18 elements each.

The 18 elements of period 4 fill the two 4s orbitals, the ten 3d orbitals, and the six 4p orbitals.

The 18 elements of period 5 fill the two 5s orbitals, the ten 4d orbitals, and the six 5p orbitals.

⇒ Only s, p, and d orbitals.

4) The periods 6 and 7 have 32 elements each.

The 32 elements in period 6 fill the two 6s orbitals, the ten 5d orbitals, the fourteen 4f orbitals, and the six 6p orbitals.

The 32 elements in the period 7 fill the two 7s orbitals, the ten 6d orbitals, the fourteen 5f orbitals, and the six 7p orbitals.

So, the only elements that contain electrons in s, p, d, and f orbitals are those of period 6 and 7.