51:Calcium hydroxide
52:Lead(II) oxide
53:Silver nitrate
54:Magnesium oxide
55:magnesium carbonate
56:iron(II,III) oxide
57:chloride salt
58:Methane
59:Magnesium hydroxide
60:Ammonium iron(II) sulfate
61:hydrochloric acid
62:Potassium tetraiodomercurate(II)
64:potassium nitrate
65:Calcium cyanamide Ca
67:Sulfuric acid
68:sulphur trioxide
69:Potassium carbonate