Electron emission from Molybdenum Mo requires light with a minimum frequency of 1.09 x 10 15 Hz. What is the wavelength of the light? In which region of the electromagnetic spectrum is the light emitted? | General Chemistry 1

c = λν ⇒ λ = c/ν λ = 3 . 00 × 10 8 1 . 09 × 10 15 = 2.75 x 10 -7 m = 275 nm This is an ultraviolet light.

Wave model of light - 1 | Early Quantum Theory

Chapter 4 - Early Quantum Theory

Electron emission from Molybdenum Mo requires light with a minimum frequency of 1.09 x 10¹⁵ Hz. What is the wavelength of the light? In which region of the electromagnetic spectrum is the light emitted?

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Solution

c = λν ⇒ λ = c/ν λ =

\frac{3.00 \times 10^{8}}{1.09 \times 10^{15}}

= 2.75 x 10^-7 m = 275 nm

This is an ultraviolet light.

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Wave model of light - 1 | Early Quantum Theory

General Chemistry 1 - Wave model of light - 1