The density of ZnS crystal (Zinc blende structure) having 10% Frenkel defect is [radius of Zn⁺²=40(3)^1/2 pm and radius of S^-2=110(3)^1/2pm] ( Z = 6 5 . 2, S = 32)

(1)	2.7 gm/cm3
(2)	3.0 gm/cm3
(3)	3.3 gm/cm3
(4)	1.5 gm/cm3

'x' gm of a compound A3B2C5 contains 'y' gm of A atoms

 

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how to represent the possible fischer projections for 2-bromohexane