A) 0.59 nm
B) 0.59 Å
C) 5.9 pm
D) 0.59 pm
Correct Answer: D
Solution :
Suppose closest distance is r, according to conservation of energy. \[400\times {{10}^{3}}\times 1.6\times {{10}^{-19}}=9\times {{10}^{9}}\frac{(ze)\,(2e)}{r}\] \[\Rightarrow 6.4\times {{10}^{-14}}\]\[=\frac{9\times {{10}^{9}}\times (82\times 1.6\times {{10}^{-19}})\times (2\times 1.6\times {{10}^{-19}})}{r}\] \[\Rightarrow r=5.9\times {{10}^{-13}}m=0.59\,pm\].
You need to login to perform this action.
You will be redirected in
3 sec
