Which one of the following is covalent in nature?
Correct answer: B. Be3N2
- A. Mg3N2
- B. Be3N2
- C. Ca3N2
- D. Ba3N2
Explanation
Be3N2 is a covalent compound as Be and N have a small difference in electronegativity atoms and are more likely to share electrons rather then transferring them from one to another. All other compounds have a greater difference in electronegativity between the atoms making them polar and ionic.
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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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