Chapter 16 Review

Video Review

Key Concept Summary

TA Summary


Any probability standing wave formed by an electron around a nucleus.
A set of orbitals with similar energies.
Points in the same direction of an electron's magnetic field.
No two electrons can be in the same state (address).
The only orbital with a non-zero probability of the electron being in the nucleus.
An orbital that looks like a dumbbell.


In the quantum model, the nucleus is very small compared to the region where electrons are likely to be found.
The orbital shape describes the probability of finding an electron at different angles about the nucleus.
Two electrons within the same orbital may have the same spin.
There are four different kinds of p orbitals within a given shell.
In the quantum model of the atom, electrons do not accelerate in their orbits around the nucleus as they do in the Bohr Model.
Orbitals in the higher-numbered shells are smaller than orbitals in the lower-numbered shells.
Electrons in the orbitals in the higher-numbered shells have more energy than electrons in the lower-numbered shells.
The electrons in an atom spin around in the orbitals like a top.
It is possible to predict exactly where an electron will be located once its orbital is determined.


Which of the following is experimental evidence that the Bohr model is incorrect? (The quantum model can explain why all of these occur, but the Bohr model doesn't provide an explanation as to why one of these happens.)
Which of the following is a correctly drawn energy well (orbital energy diagram) for Mg?
Below is a diagram showing the 2s orbital. In this diagram what do the dark areas represent? A depiction of the 2s orbital with a dark area in the center.
The picture below is a density diagram showing the 2p orbital. In this diagram what do the dark areas represent?A depiction of the 2p orbital with two dark areas above and below the center.
If you draw an energy well for a neutral neon atom, how many electrons does a neon atom have in its 2p orbitals? Refer to the periodic table.
In the quantum model, electrons in which orbital of the 4th shell will have the lowest energy?
The Exclusion principle states that
Which of the following orbitals will have the highest energy electrons?
An unexcited atom has its most energetic two electrons in the 3s orbital. How many electrons does it have?
Which orbitals are possible in the third shell of an atom? (select all correct answers)
If an electron moves from the 3p to the 2s level in an atom,
Which of the following are possible electronic configurations in atoms? (select all correct answers)
Which of the following is the best description of an orbital?
The Exclusion Principle states that how many electrons may occupy a single orbital?
Which of the following is the lowest energy orbital in given shell of an atom?
The shape of a "p" orbital most closely resembles that of
In the modern quantum mechanical model of the atom, which of the following best describes the behavior of electrons?

Free Response

  1. What problems does the quantum model resolve with the Bohr Model? How does it do so?
  2. According to the quantum model, why are only certain orbitals possible in atoms?
  3. What is the difference between an orbital and an orbit?
  4. What is the probability of finding a p electron inside the nucleus? Why?
  5. Using arrows to represent electrons, complete the electron energy diagrams for the following atoms:
    • H (1 electron)
    • Li (3 electrons)
    • Na (11 electrons)
  6. What similarities do you notice among the patterns of filled orbitals for H, Li, and Na?
  7. Which of the following would you expect to have similar atomic shapes? Why?
    • hydrogen (1s) and sodium (1s22s22p63s)
    • helium (1s2) and boron (1s22s22p)
    • neon (1s22s22p6) and argon (1s22s22p63s23p6)