This section contains a passage describing theory, experiments, data, etc. Two questions related to the paragraph have been given. Each question has only one correct answer out of the given 4 options (a), (b), (c) and (d).
The crystal AB (rock salt structure) has m ole cular w eight 6.02 y u, where y is an arbitrary unit in u. Also, given minimum distance between cation and anion = y 1/3 nm and observed density = 20 kg m-3.
Theoretical density of AB is