A) 27
B) 72
C) 36
D) 48
Correct Answer: B
Solution :
\[{{r}_{g}}=\frac{1}{6}{{r}_{{{H}_{2}}}}\]; \[{{M}_{g}}={{M}_{{{H}_{2}}}}.{{\left[ \frac{{{r}_{{{H}_{2}}}}}{{{r}_{g}}} \right]}^{2}}=2\times {{6}^{2}}=2\times 36=72\]
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