The number and type of bonds between two carbon atoms in calcium carbide are:
Correct answer: B. One sigma, two pi
- A. One sigma, one pi
- B. One sigma, two pi
- C. Two sigma, one pi
- D. Two sigma, two pi
Explanation
Calcium carbide is an ionic carbide having [:C ≡ C :] 2+. In the C ≡ C bond, there are one sigma and two pi bonds.
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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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