MHT CET 2023 Chemistry question

Chemistry The Solid State MHT CET 2023

Not in JEE Main or NEET syllabus

Calculate the molar mass of metal having density 9.3 g that forms simple cubic unit cell. [ = 22.6 ]

(A)210.2 g Correct
(B)105.3 g
(C)52.6 g
(D)70.2 g

Answer: (A)

Solution

Density of a cubic crystal is , where is the number of atoms per unit cell. A simple cubic cell has . Hence

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Question ID VK-096376