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

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry2. structure of atom1 Mark
MCQ
The expression for Bohr's radius of an atom is
  • A
    $r = \frac{{{n^2}{h^2}}}{{4{\pi ^2}m{e^4}{z^2}}}$
  • ✓
    $r = \frac{{{n^2}{h^2}}}{{4{\pi ^2}m{e^2}z}}$
  • C
    $r = \frac{{{n^2}{h^2}}}{{4{\pi ^2}m{e^2}{z^2}}}$
  • D
    $r = \frac{{{n^2}{h^2}}}{{4{\pi ^2}{m^2}{e^2}{z^2}}}$
✓

Answer

Correct option: B.
$r = \frac{{{n^2}{h^2}}}{{4{\pi ^2}m{e^2}z}}$
b
It’s Obvious

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