The number of bonds in nitrogen molecule is:
Correct answer: C. One σ and two π
- A. One σ and three π
- B. Three σ bonds only
- C. One σ and two π
- D. Two σ and one π
Explanation
In a nitrogen molecule (N2), there are one sigma (σ) bond and two pi (π) bonds.The sigma bond is formed by the head-on overlap of the two nitrogen 2p orbitals, resulting in the sharing of two electrons.The two pi bonds are formed by the side-to-side overlap of the remaining 2p orbitals, one from each nitrogen atom. Each pi bond involves the sharing of two electrons, one in a π bonding molecular orbital and one in a π antibonding molecular orbital, for a total of four electrons shared between the 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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