1: Identify whether each compound(s) is/are ionic.
Only answers (a) and (b) are ionic compounds. Both formulas begin with a metal (atom from the left side of the periodic table) ion.
2: Identify whether each compound(s) is/are covalent.
Only answers (a) and (b) are covalent compounds. Both formulas begin with nonmetals and/or metalloids (atoms from the right side of the table)
3: Write the formula for each ionic compound.
- magnesium sulfite
- aluminum nitride
- mercury II hydroxide
- ammonium oxide
a. MgSO3 b. AlN c) Hg(OH)2 d) (NH4)2O
4: Write the formula for each covalent compound.
- iodine trichloride
- disulfur dibromide
- arsenic trioxide
- xenon hexafluoride
a. ICl3 b. S2Br2 c. AsO3 d. XeF6
5: Which covalent species would be considered free radicals?
- hydrogen monoxide
- carbon dioxide
- phosphorus disulfide
- ammonia (NH3)
- silicon tetrafluoride
- nitrogen dioxide
- carbon disulfide
- diphosphorus pentoxide
H2O and NH3 (water and ammonia) (answers will vary)