Covalent compounds have low melting points because
- ACovalent bond is less exothermic
- BCovalent molecules have definite shape
- CCovalent bond is weaker than ionic bond
- DCovalent molecules are held by weak Van der Waals forces of attraction
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Which one of the following pairs is an example of polar molecular solids?
$Na_2SO_4$ is water soluble but $BaSO_4$ is insoluble because
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View SolutionExplain dipole-induced dipole forces.
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View SolutionThe radii and charges of six ions are given below:
Ion $J^{+}$ $L^{+}$ $M^{2+}$ $X^{-}$ $Y^{-}$ $Z^{2-}$ Radius $(nm)$ $0.14$ $0.18$ $0.15$ $0.14$ $0.18$ $0.15$
If the ionic compounds $JX$,$LY$,and $MZ$ have the same crystal structure,then the correct order of their lattice energy is:
| Ion | $J^{+}$ | $L^{+}$ | $M^{2+}$ | $X^{-}$ | $Y^{-}$ | $Z^{2-}$ |
| Radius $(nm)$ | $0.14$ | $0.18$ | $0.15$ | $0.14$ | $0.18$ | $0.15$ |
If the ionic compounds $JX$,$LY$,and $MZ$ have the same crystal structure,then the correct order of their lattice energy is:
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View SolutionThe solid $NaCl$ is a bad conductor of electricity since:
MediumAIIMS 1980
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