Rock crystal is

Rocks

Which of the following statements is/are correct with respect to crystal showing rock salt structure?

A-scientist was performing X-ray diffraction studies on a crystal having rock salt structure. The molecular mass of the.crystal ls 239 gmol^-1 .The density of the crystal was found to be 12.7 gcm^-3 The scientist is supposed to study only those crystals having edge length below 0.75 mm. Show whether the crystal selected by the scientist was appropriate or not.

Two ionic solids AB and CB crystallize in rock salt structure. If r_(A^(o+))//r_(B^(Θ)) and r_(C^(o+))//r_(B^(Θ)) are 0.50 and 0.70, respectively, the ratio of unit cell edge length of AB and CB is

How many unit cells are present in 5.0 gm of crystal AB (formula mass of AB =40) having rock salt type structure ? ( N_(A) = Avogadro 's no.)

How many unit cell are present in 4.0 gm of crystal AB (formula mass of AB = 40) having rock salt type structure ? ( N_(A) = Avogadro's no.)

How many unit cells are present in 5.0 gm of crystal AB (formula mass of AB =40) having rock salt type structure ? ( N_(A) = Avogadro 's no.)

How many unit cells are present in 5.0 gm of crystal AB (formula mass of AB =40) having rock salt type structure ? ( N_(A) = Avogadro 's no.)

Blue rock salt is classified as