Answer
a. K: Potassium; Cl: Chlorine;
b. Zn: Zinc; P: Phosphorus; O: Oxygen;
c. Mg: Magnesium; O: Oxygen; H: Hydrogen;
d. Ba: Barium; S: Sulfur; O: Oxygen.
Work Step by Step
Consult Table 4.2 (Page 103) to see the names of some common elements and their symbols.