The attractive interactions between cations and mobile electrons in metallic solid is called

What type of bonds are present in molecular crystals?

Which of the following does not conduct electricity?

Suggest the most important type of intermolecular attractive interaction in the following pairs.
$(i)$ $n$-hexane and $n$-octane
$(ii)$ $I_{2}$ and $CCl_{4}$
$(iii)$ $NaClO_{4}$ and water
$(iv)$ methanol and acetone
$(v)$ acetonitrile $(CH_{3}CN)$ and acetone $(C_{3}H_{6}O)$

Which of the following forces is effective between noble gas atoms?

Dipole-induced dipole interactions are present between which of the following pairs?