A) \[{{10}^{21}}\]
B) \[{{10}^{23}}\]
C) \[{{10}^{24}}\]
D) \[6.023\times {{10}^{23}}\]
Correct Answer: A
Solution :
2g of chlorophyll has \[=\frac{2\times 2}{100}g\] of \[Mg\] \[=2\times \frac{2}{100}\times \frac{1}{2}mol\] of \[Mg\] \[\therefore \] Number of atoms \[=\frac{4}{2400}\times 6.023\times {{10}^{23}}\] \[={{10}^{21}}\] atom
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