A) 1
B) 6
C) 4
D) 2
Correct Answer: C
Solution :
| \[\because \] 0.33% of iron by weight means 100 g haemoglobin has 0.33 g iron. |
| 100 g of haemoglobin contains iron = 0.33 g |
| \[\therefore \] 67200 g of haemoglobin contains iron |
| \[\frac{0.33\times 67200}{100}g\,=221.768\,g\,of\,iron\] |
| Number of e atoms \[=\frac{221.768}{56}=3.96\,\approx \,4\] |
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