Calculate the density of an element having molar mass 225 gmol^ -1 forming bcc structure [a^3 x N_A = 75 cm^3mol^ -1 ]

MHT CET 2026 Chemistry question

Not in JEE Main or NEET syllabus

Calculate the density of an element having molar mass 225 gmol forming bcc structure [a x N = 75 cmmol]

(A)6.0 g cmCorrect
(B)2.81 g cm
(C)9.24 g cm
(D)11.36 g cm

Answer: (A)

Solution

Density of a cubic unit cell is . For a body-centred cubic (bcc) lattice the number of atoms per unit cell is (8 corners x 1/8 + 1 body centre). Substituting and $ = 75\

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Question ID VK-101615