Silicon is found in nature in form of:
Correct answer: C. Silica or silicates
- A. Isolated or free silicon
- B. Sulphides
- C. Silica or silicates
- D. Only silicates
Explanation
Si occurs chiefly as the oxide (silica, SiO2) and as silicates (e.g. quartz).
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Chemical bonding explains molecular shape through VSEPR theory and distinguishes sigma bonds from pi bonds. Questions involve hybridization, bond angles, dipole moment and bond energy, including how electron-pair repulsion determines geometry and how bond polarity differs from the overall polarity of a molecule.
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