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An element has a body centred cubic (bcc) structure with a cell edge of \( 444 \mathrm{pm} \). The density of the element is \( 7.2 \mathrm{~g} / \mathrm{cm}^{3} \). How many unit cell present in \( 404 \mathrm{~g} \) of the element?
(a) \( 3.12 \times 10^{24} \) unit cells
(b) \( 9.24 \times 10^{24} \) unit cell
(c) \( 6.41 \times 10^{23} \) unit cells
(d) \( 12.08 \times 10^{23} \) unit cells
\( \mathrm{P} \)
W
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