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Chemistry · Structure of atom

हिन्दी

What is the wavenumber of yellow radiation having a wavelength of \( 5800\text{ \AA} \)?

  1. A
    \( 1.724 \times 10^4\text{ cm}^{-1} \)
  2. B
    \( 5.172 \times 10^{14}\text{ cm}^{-1} \)
  3. C
    \( 1.724 \times 10^6\text{ cm}^{-1} \)
  4. D
    \( 5.80 \times 10^{-5}\text{ cm}^{-1} \)
View Answer & Solution

Correct answer · Option A

\( 1.724 \times 10^4\text{ cm}^{-1} \)

Explanation

Wavenumber \( \bar{\nu} = \frac{1}{\lambda} = \frac{1}{5800 \times 10^{-10}\text{ m}} = 1.724 \times 10^6\text{ m}^{-1} = 1.724 \times 10^4\text{ cm}^{-1} \).
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