Which of the following statements is wrong regarding ionic compounds?
Correct answer: B. The force of attraction between ions is non-directional
- A. These are generally "in a solid state" at room temperature
- B. The force of attraction between ions is non-directional
- C. Ionic compounds are soluble in all polar solvents
- D. They conduct electricity in molten and solution state
Explanation
This statement is incorrect because it is an overgeneralization. While many ionic compounds are soluble in polar solvents like water ("like dissolves like"), many are not. Solubility depends on a balance between lattice energy and hydration energy, and for some compounds, the lattice energy is too high to be overcome.
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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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