A) 1.0
B) 1.50
C) 0.75
D) 0.40
Correct Answer: C
Solution :
\[2\pi {{r}_{n}}=n\lambda \] \[2\pi {{a}_{0}}\times \frac{{{n}^{2}}}{Z}=n\lambda \] \[2\pi {{a}_{0}}\times \frac{n}{Z}=1.5\pi {{a}_{0}}\] \[\frac{n}{Z}=\frac{1.5\pi {{a}_{0}}}{2\pi {{a}_{0}}}=0.75\]
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