The reaction between a metal and oxygen produces a metal oxide.
Lithium forms lithium oxide when it reacts with oxygen. The reaction is:
We have the following data:
Li+ ions in compound = 8.4x1021
O2- ions in compound = ?
An ionic compound forms when lithium (Z = 3) reacts with oxygen (Z = 8). If a sample of the compound contains 8.4×1021 lithium ions, how many oxide ions does it contain?
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