# Chemistry

Which one of the following substances crystallizes as a covalent crystal?
CaO
SiO2

CO2

Pb
KMnO4

1. 👍
2. 👎
3. 👁
1. Both SiO2 and CO2 are covalent.

1. 👍
2. 👎
2. SiO2

1. 👍
2. 👎

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