CH-242
Giant covalent structures
Chemistry · Secondary 3 · Medium · Giant covalent structures
Silicon dioxide, SiO₂, is a giant covalent structure. Which statement explains why solid SiO₂ does not conduct electricity?
- It has no free electrons or mobile ions to carry charge.
- Its ions are fixed but electrons move freely.
- It contains only positive ions which repel each other.
- Its covalent bonds are too weak to allow conduction.
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