
Concept explainers
Interpretation:
The light with shortest and longest wavelength has to be identified from the kinetic energies of ejected electrons.
Concept Introduction:
Wavelength and frequency:
The distance between any two similar points of a wave is called wavelength.
Figure 1
Frequency is defined as number of wavelengths of a wave that can pass through a point in one second. Hertz is a unit of frequency. It is defined as cycles per second. Increase in wavelength decreases frequency and vice-versa. Therefore, wavelength and frequency are inversely proportional to each other.
Ejection of electrons:
Electrons present in metals are held by attractive force. It requires higher

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Chapter 7 Solutions
General Chemistry
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