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Atomic Structure
The radius of which of the following orbit is same as that of the first Bohr's orbit of hydrogen atom
$\begin{array}{1 1}(a)\;He^+(n=2)&(b\;Li^{2+}(n=2)\\(c)\;Li^{2+}(n=3)&(d)\;Be^{3+}(n=2)\end{array}$
jeemain
chemistry
physical-chemistry
class11
unit2
atomic-structure
bhor's-model
q81
medium
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asked
Jan 15, 2014
by
sreemathi.v
retagged
Aug 4, 2014
by
sharmaaparna1
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1 Answer
$r_2Be^{3+}=\large\frac{r_2H}{z}$
$\Rightarrow \large\frac{r_1H\times 2^2}{z}$
$\Rightarrow \large\frac{r_1H\times 4}{4}$
$\Rightarrow r_1H$
Hence (d) is the correct answer.
answered
Jan 15, 2014
by
sreemathi.v
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