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QUESTION
5. Lithium nitride has the chemical formula ##Li_3N##. Rubidium is in the same chemical family as lithium. What is the formula of rubidium nitride?
We would assume ##Rb_3N##.
Rubidium, an alkali metal, commonly forms ##Rb^+## salts, just as lithium commonly forms ##Li^+## salts. We would assume that the formula of rubidium nitride (if it exists!) is ##Rb_3N##.
