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Work Function Formula

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Work Function is the minimum thermodynamic work needed to remove an electron from a solid to a point in the vacuum immediately outside the solid surface. Check FAQs

Φ = ([hP] \cdot ν) - E binding - E kinetic

Φ - Work Function?ν - Photon Frequency?E_binding - Binding Energy of Photoelectron?E_kinetic - Kinetic Energy of Photoelectron?[hP] - Planck constant?

Work Function Example

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Here is how the Work Function equation looks like with Values.

Here is how the Work Function equation looks like with Units.

Here is how the Work Function equation looks like.

1.5261 = (6.6E-34 \cdot 1E+34) - 5.1 - 6.6E-19

1.5261J = (6.6E-34 \cdot 1E+34Hz) - 5.1N*m - 6.6E-19J

1.5261 = (6.6E-34 \cdot 1E+34) - 5.1 - 6.6E-19

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Work Function Solution

Follow our step by step solution on how to calculate Work Function?

FIRST Step Consider the formula

Φ = ([hP] \cdot ν) - E binding - E kinetic

Next Step Substitute values of Variables

∴

Φ = ([hP] \cdot 1E+34Hz) - 5.1N*m - 6.6E-19J

Next Step Substitute values of Constants

∴

Φ = (6.6E-34 \cdot 1E+34Hz) - 5.1N*m - 6.6E-19J

Next Step Prepare to Evaluate

∴

Φ = (6.6E-34 \cdot 1E+34) - 5.1 - 6.6E-19

Next Step Evaluate

∴

Φ = 1.52607004J

LAST Step Rounding Answer

∴

Φ = 1.5261J

Work Function Formula Elements

Variables

Constants

Work Function

Work Function is the minimum thermodynamic work needed to remove an electron from a solid to a point in the vacuum immediately outside the solid surface.

Symbol: Φ

Measurement: EnergyUnit: J

Note: Value should be greater than 0.

Formulas to find Work Function

Photon Frequency

Photon Frequency is the number of occurrences of a repeating event per unit of time.

Symbol: ν

Measurement: FrequencyUnit: Hz

Note: Value can be positive or negative.

Formulas to find Photon Frequency

Binding Energy of Photoelectron

The Binding Energy of Photoelectron is the amount of energy required to separate a particle from a system of particles or to disperse all the particles of the system.

Symbol: E_binding

Measurement: TorqueUnit: N*m

Note: Value can be positive or negative.

Formulas to find Binding Energy of Photoelectron

Kinetic Energy of Photoelectron

Kinetic Energy of Photoelectron is the energy associated with the movement of photoelectron.

Symbol: E_kinetic

Measurement: EnergyUnit: J

Note: Value can be positive or negative.

Formulas to find Kinetic Energy of Photoelectron

Planck constant

Planck constant is a fundamental universal constant that defines the quantum nature of energy and relates the energy of a photon to its frequency.

Symbol: [hP]

Value: 6.626070040E-34

Other formulas in Electronic Spectroscopy category

Go Eigenvalue of Energy given Angular Momentum Quantum Number

E = \frac{l \cdot (l + 1) \cdot {([hP])}^{2}}{2 \cdot I}

Go Rydberg Constant given Compton Wavelength

R = \frac{{(α)}^{2}}{2 \cdot λ c}

Go Binding Energy of Photoelectron

E binding = ([hP] \cdot ν) - E kinetic - Φ

Go Frequency of Absorbed Radiation

ν mn = \frac{E m - E n}{[hP]}

How to Evaluate Work Function?

Work Function evaluator uses Work Function = ([hP]*Photon Frequency)-Binding Energy of Photoelectron-Kinetic Energy of Photoelectron to evaluate the Work Function, The Work Function formula is defined as the minimum thermodynamic work needed to remove an electron from a solid to a point in the vacuum immediately outside the solid surface. Work Function is denoted by Φ symbol.

How to evaluate Work Function using this online evaluator? To use this online evaluator for Work Function, enter Photon Frequency (ν), Binding Energy of Photoelectron (E_binding) & Kinetic Energy of Photoelectron (E_kinetic) and hit the calculate button.

FAQs on Work Function

What is the formula to find Work Function?

The formula of Work Function is expressed as Work Function = ([hP]*Photon Frequency)-Binding Energy of Photoelectron-Kinetic Energy of Photoelectron. Here is an example- 1.52607 = ([hP]*1E+34)-5.1-6.6E-19.

How to calculate Work Function?

With Photon Frequency (ν), Binding Energy of Photoelectron (E_binding) & Kinetic Energy of Photoelectron (E_kinetic) we can find Work Function using the formula - Work Function = ([hP]*Photon Frequency)-Binding Energy of Photoelectron-Kinetic Energy of Photoelectron. This formula also uses Planck constant .

Can the Work Function be negative?

No, the Work Function, measured in Energy cannot be negative.

Which unit is used to measure Work Function?

Work Function is usually measured using the Joule[J] for Energy. Kilojoule[J], Gigajoule[J], Megajoule[J] are the few other units in which Work Function can be measured.

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Work Function Formula

Work Function Example

Work Function Solution

Work Function Formula Elements

Other formulas in Electronic Spectroscopy category

How to Evaluate Work Function?

FAQs on Work Function

Variable Name