I. Ionic solids conduct electricity, because the ions are fixed in the – InterviewSolution

1.	I. Ionic solids conduct electricity, because the ions are fixed in their lattice positions. II. Hydrogen bonded molecular solids are soft solids under room temperature. III. Dipole-dipole interactions are found in polar molecular solids IV. X-ray diffraction analysis is used for the determination of crystal structure.
Answer» II,III, & IV Only II Only I III & IV Answer :A

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