The red line observed in the line spectrum for hydrogen has a wavelength of 656 nm. What is the frequency of this light in hertz (s^-1)? A)4.57 × 10⁵ s^-1 B)4.57 × 10¹⁴ s^-1 C)2.18 × 10^-6 s^-1 D)2.18 × 10^-13 s^-1 E)1.97 × 10² s^-1

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Quizplus · Accepted Answer

The frequency of light can be calculated using the formula $f = \frac{c}{\lambda}$, where $c$ is the speed of light ($3.00 \times 10^8$ m/s) and $\lambda$ is the wavelength in meters. Converting 656 nm to meters gives $656 \times 10^{-9}$ m. Plugging these values into the formula gives a frequency of approximately $4.57 \times 10^{14}$ Hz.

The Red Line Observed in the Line Spectrum for Hydrogen