Question

indicate whether each statement about atomic energy levels is true or false.

1. the atom shown in the diagram has four energy levels or shells. (click to select)
2. the atom shown in the diagram above has a total of five electron orbitals. (click to select)
3. each energy level consists of two or more orbitals. (click to select)
4. the second energy level consists of four electron orbitals. (click to select)
5. some orbitals near the nucleus are spherical (s orbitals), while others are dumbbell - shaped (p orbitals). still others, farther away from the nucleus, have other shapes. (click to select)
6. because electrons are attracted to the positively charged nucleus, the closer an electron is to the nucleus, the more potential energy it has. (click to select)

Explanation:

1. Looking at the electron - shell diagram, we can count the number of concentric circles representing energy levels. There are two energy levels (K and L), so this statement is false.
2. The diagram shows one 2s (spherical) and three 2p (dumb - bell shaped) orbitals, making a total of four orbitals, so this statement is false.
3. The first energy level (1s) has only one orbital, so this statement is false.
4. The second energy level (n = 2) has one 2s and three 2p orbitals, for a total of four orbitals, so this statement is true.
5. s orbitals are spherical and p orbitals are dumb - bell shaped, and as we move to higher energy levels, there are other orbital shapes like d and f, so this statement is true.
6. The closer an electron is to the nucleus, the lower its potential energy due to the attractive force between the negatively - charged electron and the positively - charged nucleus, so this statement is false.

Answer:

1. False
2. False
3. False
4. True
5. True
6. False