Photoelectric Effect (Cesium)

Cs + hν → Cs+ + e−

Descripción general

Photons with energy exceeding the work function of cesium (2.1 eV, wavelength < 590 nm) eject electrons from the metal surface. Cesium has the lowest work function of any stable element, making it the most photosensitive metal. Einstein's explanation of this effect in 1905 established the quantum nature of light and won him the Nobel Prize.

Participantes

Rol Sustancia Coeficiente Estado
Reactivo Cesium Cs 1 (s)

Ejemplo cotidiano

Automatic doors use photoelectric sensors that detect when a person blocks a light beam, triggering the door to open.

Importancia industrial

Base del diseño de celdas fotoeléctricas, sensores de luz, paneles solares y detectores de radiación.

Propiedades

Tipo
Photochemical
Reversible
No
Energía
Endotérmico

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Frequently Asked Questions

What is the equation for Photoelectric Effect (Cesium)?
The balanced equation is: Cs + hν → Cs⁺ + e⁻.
What type of reaction is Photoelectric Effect (Cesium)?
Photoelectric Effect (Cesium) is a photochemical reaction.
Is Photoelectric Effect (Cesium) exothermic or endothermic?
Photoelectric Effect (Cesium) is endothermic (absorbs energy).