As compared to covalent compounds, electrovalent compounds generally have:
Correct answer: B. high melting points and high boiling points
- A. low melting points and low boiling points
- B. high melting points and high boiling points
- C. low melting points and high boiling points
- D. high melting points and low boiling points
Explanation
Ionic compounds have high M.P. and B.P. Ionic bond is primary bond and hence very strong bond. Therefore melting and boiling points of such strong bonds are high as more energy is needed to break bond.
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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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