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Iron crystallizes in body centered cubic system with edge length 2 .86 Å . The density of iron is nearly 'X' g/ml. What is the value of 'X' here? Report your answer by rounding it upto nearest whole number.

Correct answer

8

Step-by-step solution

As d = Z m a 3 N A = 2 × 56 2.86 × 1 0 - 8 × 6.02 × 1 0 23 ≈ 7.92 g c m 3 ≃ 8 g c m 3 ≃ 8 g / m l

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