CHM 1045
Dr. Michael Blaber

Name_________________________

SS #__________________________

1. Given the following information write the chemical symbols for each element (2 points)

Number of neutrons	Number of electrons	Number of protons	Symbol
19	18	16
17	15	15
25	18	20
79	54	55

2. Given the following ions, write the number of neutrons, electrons and protons (2 points)

Ion	Number of electrons	Number of protons
8Be2+	2	4
131I-	54	53
110Cs+	54	55
18O2-	10	8

3. Given the following structural formulas, write out the molecular and empirical formulas (2 points)

Structural Formula	Molecular Formula	Empirical Formula
	C2H6O2	CH3O
	C6H12	CH2

4. What is the most likely chemical formula for an ionic compound involving the elements Calcium and Chlorine? (1 point)

6. Give names for the following oxyanionic compounds (2 points)