1. How many principle energy levels are there? ______
  2. How many subshells are there and what is the maximum number of electrons in each?
  1. The ______tells you the order in which electrons fill orbitals in an atom.
  2. Electrons prefer the ______energy location possible.
  3. An elements ______electrons are the most important electrons.
  4. The valence electrons are located on the ______most ______.
  5. The electron configuration for sulfur is: ______
  6. The highest energy level of sulfurs electrons is the ______energy level.
  7. The # of electrons on sulfur’s outer most energy level is _____; therefore, sulfur has ____ valence electrons.
  8. The electron configuration for titanium is: ______
  9. The highest principle energy level for titanium is the ______. Titanium has _____ electrons on its highest energy level and therefore has ____ valence electrons.
  10. When writing orbital diagrams the ______represent orbitals and the ______represent electrons.
  11. Each orbital can hold a maximum of ______electrons.
  12. Electrons always occupy the ______energy level possible (they like to be close to the nucleus).
  13. Hund’s rule states that every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied
  14. The Pauli Exclusion Principle states that the two electrons in an orbital have ______spins. This is why, when using orbital diagrams the arrows must go in ______directions.
  15. The orbital notation for gallium is:
  1. The highest energy level of Gallium’s electrons is the ______, there are ______electrons on this energy level therefore, Gallium has ______valence ______.
  1. The orbital notation for Silicon is:
  1. The highest energy level occupied by silicon’s electrons is the _____ energy level. Therefore, Silicon has ____ valence electrons.
  2. Why do electrons fill the 4s orbital before filling the 3d orbital? ______
  3. List the noble gases: ______
  4. Why are the noble gases considered “noble”? ______

______

  1. Which noble gas only has 2 valence electrons? ______
  2. Which noble gas should be used when writing the noble gas (abbreviated version) of an electron configuration? -______
  3. After choosing the preceding noble gas how do you know at what point to continue the configuration? ______

______

  1. Write the noble gas configuration for the following elements:
  2. Siver ______
  3. Astatine: ______
  4. Tungsten: ______
  5. Tellurium: ______
  6. Bromine: ______
  7. Antimony: ______
  8. The groups on the periodic table are horizontal/vertical and are columns/ rows. (circle the two correct answers)
  9. Elements in the same group have the same number of ______.
  10. Draw an abbreviated version of the periodic table and label the s,p,d and f blocks.
  1. The representative elements are elements in blocks ____ and ______.
  2. The group number of the representative elements tells you the number of ______

for all members of that group.

  1. Elements in group 2 have ______valence electrons.
  2. Elements in group 5 have ______valence electrons.
  3. The periods on the periodic table are vertical/horizontal and are commonly called columns/rows.
  4. The period # of an element can be used to determine the ______of an elements valence electrons.
  5. Bromine has ______valence electrons and they are all located on the ______energy level.
  6. Chlorine has ______valence electrons and they are all located on the ______energy level.
  7. Magnesium has _____ valence electrons and they are all located on the ______energy level.
  8. Hydrogen has _____ valence electrons and they are all located on the ______energy level.

Complete the following chart:

Element / Group # / Period # / # valence electrons / Location of valence e-
sodium
aluminum
Phosphorus
neon
carbon
  1. Why do chlorine and bromine have similar chemical properties? ______

______

  1. List 3 elements that have similar chemical properties to sodium. ______
  2. What element has 5 valence electrons on the 4th energy level? ______
  3. What elements has 3 valence electrons on the 5th energy level? ______
  4. What element has 7 valence electrons on the 3rd energy level? ______
  5. What element has an electron configuration that ends in 3p4?______
  6. What element has an electron configuration that ends in 4d8? ______
  7. What element has an electron configuration that ends in 3d9? ______
  8. What element has an electron configuration that ends in 5s2?______