Question

Lithium
has a charge of
, and oxygen
has a charge of
. Which is the chemical formula?
Responses

LiO

LiO sub 2

Li sub 2 cap o sub 2

Li sub 2 cap o

Answer 1

Lithium is Li+ and oxygen is O2–. To balance charges you need two Li+ for one O2–, so the formula is Li2O (the answer "Li sub 2 cap o").