In carbon dioxide (CO2) molecule, the number of sigma covalent bond(s) are:
Correct answer: B. 2
- A. 1
- B. 2
- C. 3
- D. 4
Explanation
In a carbon dioxide (CO2) molecule, the carbon atom forms two double bonds, one with each oxygen atom. Each C=O double bond consists of one sigma bond and one pi bond. Therefore, in the entire molecule, there are two sigma bonds. Option B: 2 is the correct answer. Options A, C, and D are incorrect because they suggest an incorrect number of sigma bonds based on the structure of CO2.
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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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