Untitled - Kelly Walsh High School

Atoms, Ions, and Molecules 29
20.
Na K Mn2 Xe As3 23
40
53
130
75
11
19
25
54
33
Protons 11 19 25 54 33
Neutrons 12 21 28 76 42
Electrons 11 18 23 54 36
Charge 0 1 2 0 3
Mass number 23 40 53 130 75
21. a. sodium sulfide b. magnesium chloride c. aluminum fluoride
d. copper(II) oxide e. potassium hydride
22. a. CaCl2 b. Na2O c. AlN d. FeF2 e. FeF3 23. a. nitrogen dioxide b. carbon monoxide c. hydrogen sulfide
or hydrosulfuric acid d. dichlorine pentoxide e. methane
24. a. HCl b. SO2 c. SO3 d. N2O5 e. NH3 25. a. sodium nitrate b. potassium carbonate c. calcium sulfate
d. ammonium phosphate e. iron(II) nitrite
26. a. Na3PO4 b. NH4HCO3 c. Mg(NO2) 2 d. CuCl e. Fe2O3 27. a. hydrofluoric acid
e. sulfuric acid
b. nitric acid c. phosphoric acid d. carbonic acid
28. a. HNO2 b. H2S c. H2SO4 d. HCl e. HNO3 29. a. metal b. metal c. metal d. nonmetal e. nonmetal f. nonmetal
30. a. Cs b. Ra 2 c. Tl 3 d. P 3 e. Se 2 f. I