NAMES to FORMULAS IONIC and MOLECULAR Inside there

NAMES to FORMULAS IONIC and MOLECULAR Inside there are 50 chances for you to look at a formula and determine the proper or stock name of the compound. You are asked each time to first decide if it’s IONIC or MOLECULAR. You can tell if the 1 st atom or part is a METAL, that’s ionic. If the 1 st atom or part is a NONMETAL, then that’s is molecular. The only exception is when you see AMMONIUM, which starts with an N for nitrogen, but NH 4+1 is a polyatomic cation, so those are ionic after all.

I suggest getting a piece of paper, and numbering 1 -50 and doing them all. You might need to do some now, some later, and some again. Once you grade them, CORRECT YOURSELF in RED, that makes you really feel the sting of booboos. All mistakes, however small should be redone. If you can’t get through them all error free, study more. Ask your teacher what’s up with things, learn the rules for naming. You can do this without paper, but when you do it in your head, you are going to be too nice to yourself. You should be able to write it exactly correct, not “almost right but I won’t forget it next time so I will take a point now anyway” correct. Exactly correct is the standard.

Magnesium oxide What is the formula of this compound? Is it ionic or molecular?

Magnesium oxide Mg. O Ionic, Mg is a metal

Tantalum fluoride What is the formula of this compound? Is it ionic or molecular?

Tantalum fluoride Ta. F 5 Ionic, Ta is a metal

Strontium chloride What is the formula of this compound? Is it ionic or molecular?

Strontium chloride Sr. Cl 2 Ionic, Sr is a metal

Nickel III Bromide What is the formula of this compound? Is it ionic or molecular?

Nickel III Bromide Ni. Br 3 Ionic, Ni is a metal

Carbon tetrahydride What is the formula of this compound? Is it ionic or molecular?

Carbon tetrahydride CH 4 Molecular, carbon is a nonmetal

Titanium IV oxide What is the formula of this compound? Is it ionic or molecular?

Titanium IV oxide Ti. O 2 Ionic, Ti is a metal It is the Ti+4 ion, because it balances the charge of the two O-2 anions in a 1: 2 ratio.

Nitrogen dioxide What is the formula of this compound? Is it ionic or molecular?

Nitrogen dioxide NO 2 Molecular, N is a nonmetal

Titanium III oxide What is the formula of this compound? Is it ionic or molecular?

Titanium III oxide Ti 2 O 3 Ionic, Ti is a metal Titanium (III) cation is Ti+3

Titanium II oxide What is the formula of this compound? Is it ionic or molecular?

Titanium II oxide Ti. O Ionic, Ti is a metal Titanium (II) cation is Ti+2

Aluminum nitride What is the formula of this compound? Is it ionic or molecular?

Aluminum nitride Al. N Ionic, Al is a metal

Phosphorous trichloride What is the formula of this compound? Is it ionic or molecular?

Phosphorous trichloride PCl 3 Molecular, P is a nonmetal

Boron trifluoride What is the formula of this compound? Is it ionic or molecular?

Boron trifluoride BF 3 Molecular, B is a nonmetal

Carbon tetrafluoride What is the formula of this compound? Is it ionic or molecular?

Carbon tetrafluoride CF 4 Molecular, C is a nonmetal

Dinitrogen trioxide What is the formula of this compound? Is it ionic or molecular?

Dinitrogen trioxide N 2 O 3 Molecular, N is a nonmetal

Oxygen difluoride What is the formula of this compound? Is it ionic or molecular?

Oxygen difluoride OF 2 Molecular, O is a nonmetal

Sulfur trioxide What is the formula of this compound? Is it ionic or molecular?

Sulfur trioxide SO 3 Molecular, S is a nonmetal

Silicon dioxide What is the formula of this compound? Is it ionic or molecular?

Silicon dioxide Si. O 2 Molecular, Si is a nonmetal

Silicon tetrafluoride What is the formula of this compound? Is it ionic or molecular?

Silicon tetrafluoride Si. F 4 Molecular, Si is a nonmetal

Dihydrogen monosulfide What is the formula of this compound? Is it ionic or molecular?

Dihydrogen monosulfide H 2 S Molecular, H is a nonmetal

Arsenic pentabromide What is the formula of this compound? Is it ionic or molecular?

Arsenic pentabromide As. Br 5 Molecular, As is a nonmetal

Selenium trioxide What is the formula of this compound? Is it ionic or molecular?

Selenium trioxide Se. O 3 Molecular, Se is a nonmetal

Phosphorous triiodide What is the formula of this compound? Is it ionic or molecular?

Phosphorous triiodide PI 3 Molecular, P is a nonmetal

Fluorine monochloride What is the formula of this compound? Is it ionic or molecular?

Fluorine monochloride FCl Molecular, F is a nonmetal

Hydrogen monobromide What is the formula of this compound? Is it ionic or molecular?

Hydrogen monobromide HBr Molecular, H is a nonmetal

Sulfur hexabromide What is the formula of this compound? Is it ionic or molecular?

Sulfur hexabromide SBr 6 Molecular, S is a nonmetal

Phosphorous pentachloride What is the formula of this compound? Is it ionic or molecular?

Phosphorous pentachloride PCl 5 Molecular, P is a nonmetal

Vanadium III oxide What is the formula of this compound? Is it ionic or molecular?

Vanadium III oxide V 2 O 3 Ionic, V is a metal Vanadium (III) is the V+3 cation

Chromium III sulfate What is the formula of this compound? Is it ionic or molecular?

Chromium III sulfate Cr 2(SO 4)3 Ionic, Cr is a metal +3 This is the Cr cation -3 sulfate is the SO 4 anion

Arsenic triiodide What is the formula of this compound? Is it ionic or molecular?

Arsenic triiodide As. I 3 Molecular, As is a nonmetal

Tantalum hydroxide What is the formula of this compound? Is it ionic or molecular?

Tantalum hydroxide Ta(OH)5 ionic, Ta is a metal although it’s transitional, it makes ONLY +5 the Ta cation, no RN needed

Iridium (III) chloride What is the formula of this compound? Is it ionic or molecular?

Iridium (III) chloride Ir. Cl 3 ionic, Ir is a metal Iridium (III) cation is the Ir+3

Carbon diselenide What is the formula of this compound? Is it ionic or molecular?

Carbon diselenide CSe 2 molecular, C is a non metal

Iridium (IV) phosphate What is the formula of this compound? Is it ionic or molecular?

Iridium (IV) phosphate Ir 3(PO 4)4 ionic, Ir is a metal Iridium (IV) is the Ir+4 cation

Zinc oxide What is the formula of this compound? Is it ionic or molecular?

Zinc oxide Zn. O ionic, Zn is a metal Although it’s transitional, it makes ONLY +2 the Zn cation, no RN needed.

Copper II oxide What is the formula of this compound? Is it ionic or molecular?

Copper II oxide Cu. O ionic, Cu is a metal Copper (II) is the Cu+2 cation

Copper I oxide What is the formula of this compound? Is it ionic or molecular?

Copper I oxide Cu 2 O ionic, Cu is a metal Here it’s the Cu+1 cation

Copper II sulfide What is the formula of this compound? Is it ionic or molecular?

Copper II sulfide Cu. S ionic, Cu is a metal

Zirconium sulfide What is the formula of this compound? Is it ionic or molecular?

Zirconium sulfide Zr. S 2 ionic, Zr is a metal Zr+4 is the only cation this transitional metal makes, no RN needed

Zinc sulfide What is the formula of this compound? Is it ionic or molecular?

Zinc sulfide Zn. S ionic, Zn is a metal Zn+2 is the only cation this transitional metal makes, no RN needed

Calcium hydroxide What is the formula of this compound? Is it ionic or molecular?

Calcium hydroxide Ca(OH)2 ionic, Ca is a metal

Magnesium nitride What is the formula of this compound? Is it ionic or molecular?

Magnesium nitride Mg 3 N 2 Ionic, Mg is a metal

Strontium fluoride What is the formula of this compound? Is it ionic or molecular?

Strontium fluoride Sr. F 2 ionic, Sr is a metal

Rubidium phosphide What is the formula of this compound? Is it ionic or molecular?

Rubidium phosphide Rb 3 P ionic, Rb is a metal

Rubidium phosphate What is the formula of this compound? Is it ionic or molecular?

Rubidium phosphate Rb 3 PO 4 ionic, Rb is a metal Rb+1 cation with the PO 4 -3 anion

Ammonium phosphate What is the formula of this compound? Is it ionic or molecular?

Ammonium phosphate ionic, (NH 4)3 PO 4 +1 NH 4 is a cation, an exception!

Ammonium iodide What is the formula of this compound? Is it ionic or molecular?

Ammonium iodide ionic, +1 NH 4 I is a cation, an exception!

Silver nitrate What is the formula of this compound? Is it ionic or molecular?

Silver nitrate Ag. NO 3 ionic, Ag is a metal +1 Ag is the only cation this transitional metal makes, no RN needed

Silver nitrite What is the formula of this compound? Is it ionic or molecular?

Silver nitrite Ag. NO 2 ionic, Ag is a metal Ag+1 is the only cation this transitional metal makes, no RN needed

Bismuth (V) nitrite What is the formula of this compound? Is it ionic or molecular?

Bismuth (V) nitrite Bi(NO 2)5 ionic, Bi is a metal

Bismuth (V) nitrate What is the formula of this compound? Is it ionic or molecular?

Bismuth (V) nitrate Bi(NO 3)5 ionic, Bi is a metal