MCQ
The Rydberg constant $R$ for hydrogen is
  • A
    $R = - \left( {\frac{1}{{4\pi {\varepsilon _0}}}} \right).\frac{{2{\pi ^2}m{e^2}}}{{c{h^2}}}$
  • B
    $R = \left( {\frac{1}{{4\pi {\varepsilon _0}}}} \right).\frac{{2{\pi ^2}m{e^4}}}{{c{h^2}}}$
  • C
    $R = {\left( {\frac{1}{{4\pi {\varepsilon _0}}}} \right)^2}.\frac{{2{\pi ^2}m{e^4}}}{{{c^2}{h^2}}}$
  • $R = {\left( {\frac{1}{{4\pi {\varepsilon _0}}}} \right)^2}.\frac{{2{\pi ^2}m{e^4}}}{{c{h^3}}}$

Answer

Correct option: D.
$R = {\left( {\frac{1}{{4\pi {\varepsilon _0}}}} \right)^2}.\frac{{2{\pi ^2}m{e^4}}}{{c{h^3}}}$
d
(d)$R = \frac{{2{\pi ^2}{k^2}{e^4}m}}{{c{h^3}}} = {\left( {\frac{1}{{4\pi {\varepsilon _0}}}} \right)^2}\frac{{2{\pi ^2}m{e^4}}}{{c{h^3}}}$

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