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As element cystallises in BCC structure....

As element cystallises in BCC structure. The edge length of its unit cell is 288 pm. It the density of the crystals is ` 7.2 g cm^(-3)` , what is the atomic mass of the element ?
(b) How many atoms of the element are presnet in 100g ?

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The correct Answer is:
(a)51.8 , (b)`11.62xx10^23`
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