In aluminum oxide, ions are present in the ratio 2:3, its formula is _.
Correct answer: C. Al2O3
- A. AlO
- B. Al2O
- C. Al2O3
- D. Al3O2
Explanation
Al2O3is the only formula that satisfies both; the stated ratio of 2:3 and the valencies of elements involved (Oxygen: -2, Aluminium: +3).
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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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