FORM CODE A NAME_________________________________________
CHM 2045 Fall 2016 Practice Exam 3 (Chapters 1−11, 16)
Instructions: On your Scantron form, enter and bubble your name, UFID, and Form Code (see above).
Turn in only your Scantron. You may keep your exam sheet and any other papers. Check bubbling
carefully: bubbling errors are non-negotiable. As on all graded events, the Honor Code applies.
1. Consider the 3px and 3py orbitals in Ar. Which of the following statements is/are true?
I: They have the same energy II: They have the same orientation III: They have the same size
(1) Only I (2) Only II (3) I and III (4) II and III (5) I, II, and III
2. For which of the following atoms is the correct number of valence electrons given?
(1) F has 5 (2) Pb has 4 (3) Zr has 2 (4) Ag has 11 (5) Se has 16
3. Which ionic compound below is composed of ions that are isoelectronic with each other?
(1) MgBr2 (2) RbI (3) TiCl4 (4) ZnCl2 (5) FeS
4. Which ionic compound below is composed of a paramagnetic ion and a diamagnetic ion?
(1) Cu2O (2) TiCl4 (3) ZnO (4) ScN (5) FeS
5. Arrange the following in order of increasing radius as predicted: Ne, Na, Li+, Na+
(1) Na < Na+ < Li+ < Ne
(2) Li+ < Ne < Na+ < Na
(3) Li+ < Na+ < Ne < Na
(4) Ne < Li+ < Na+ < Na
(5) Ne < Li+ < Na < Na+
