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2. structure of atom — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry2. structure of atom1 Mark
MCQ
For which of the following species, Bohr's theory is not applicable
  • A
    $Be^{+3}$
  • B
    $Li^{+2}$
  • ✓
    $He^{+2}$
  • D
    $H$
✓

Answer

Correct option: C.
$He^{+2}$
c
$\left. {\begin{array}{*{20}{c}}
  {B{e^{ + 3}}} \\ 
  {L{i^{2 + }}} \\ 
  H 
\end{array}} \right\}$ All are single electron species. Bohr's atomic therory is applicable only for single electron species.

$H{e^{2 + }} \Rightarrow $ no electron

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