A) \[5.46\times {{10}^{29}}\]
B) \[6.25\times {{10}^{18}}\]
C) \[1.6\times {{10}^{+19}}\]
D) \[9\times {{10}^{11}}\]
Correct Answer: B
Solution :
\[n=\frac{q}{e}=\frac{1}{1.6\times {{10}^{-19}}}=6.25\times {{10}^{18}}\]
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