Which of the following molecules has six bonding electrons?
Correct answer: D. NCI3
- A. C2H4
- B. H2S
- C. CO2
- D. NCI3
Explanation
In the nitrogen trichloride molecule (NCl3), there are three single bonds between the nitrogen and chlorine atoms. Each single bond contributes two bonding electrons, and there are three such bonds in nitrogen trichloride ,hence total bonding electrons= 3 bonds × 2 electrons/bond = 6 bonding electrons NCI3 will have 3 pairs whereas C2H4 have 6 pairs,5 sigma 1 pi pair
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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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