Question

question 12 0.4 pts a major difference between a 1s orbital and a 2s orbital is that the 1s orbital can have only one electron the 2s orbital has a slightly different shape the 2s orbital is at a higher energy level the 2s orbital can hold more electrons question 13 0.4 pts what types of atomic orbitals are in the third principal energy level? p and d only s and d only s, p, d, and f s, p, and d only

Explanation:

For Question 12: The principal quantum number (n) determines the energy level. Since 2 > 1, the 2s orbital is at a higher energy level than the 1s orbital. Both 1s and 2s orbitals are spherical and can hold 2 electrons.
For Question 13: The number of sub - shells in a principal energy level n is equal to n. In the third principal energy level (n = 3), the sub - shells are s (l=0), p (l = 1) and d (l=2), so it has s, p, and d orbitals.

Answer:

Question 12: the 2s orbital is at a higher energy level
Question 13: s, p, and d only