Is it possible to eject electrons from titanium metal using visible light?

No, it is impossible

Explanation:

When we talk about electrons being ejected from a metal, we are talking about the photoelectric effect, which consists of the emission of electrons (electric current) that occurs when light falls on a metal surface under certain conditions.  

This is what Einstein proposed with the photoelectric effect:  

Light behaves like a stream of particles called photons with an energy  , which has an inverse relation with the wavelength (this means the smaller is the higher the energy):

Where is the Planck constant and is the speed of light in vacuum.

On the other hand, it is known titanium metal requires a photon with a minimum energy to emit electrons. This means, we need at least a wavelength to fulfill this condition.

Therefore:

Since the wavelength range of visible light is between 400nm and 750nm, aproximately, and 286 nm is not in this range; it is impossible to to eject electrons from titanium metal using visible light.

resonant frequency

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