Predicting Atomic Formulas

Predict the formulas for the compounds which result
when each of the following elements bond.

1)  potassium and bromine  __________	2)  hydrogen and sulfur  __________
3)  hydrogen and oxygen  __________	4)  cesium and chlorine  __________
5)  aluminum and oxygen  __________	6)  carbon and oxygen  __________
7)  carbon and bromine  __________	8)  nitrogen^3+ and chlorine  __________
9)  lead^3+ and iodine  __________	10)  P^3+ and Cl  __________
11)  Fe^4+ and S__________	12)  Ne and F  __________

Put your answer in the blank next to each question.

13)       If the formula for the compound is CO, and the charge on the oxygen ion is -2, what is the charge on the carbon? Don’t assume the carbon is C⁴⁺.     _________

14)       If the formula is CuS, what is the charge on the copper?    _________

15)       A formula for iron oxide is Fe₂O₃. What is the charge on the iron?    _________

16)       If the formula is TiO₂ what is the charge on Ti?    _________

17)       What is the formula for a nickel-sulfur compound?    _________

18)       Imagine that oxygen and hydrogen are combined as (OH)^1-. This is an ion called hydroxide. If that bonded with calcium, what would be the formula?    _________