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Allred Rochow's Electronegativity of Element Calculator

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Electronegativity Covalent Bonding Ionic Bonding

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Allred Rochow's Electronegativity Mulliken's Electronegativity Pauling's Electronegativity

✖The Effective Nuclear Charge is the net positive charge experienced by an electron in a polyelectronic atom.ⓘ Effective Nuclear Charge [Z]			+10% -10%
✖The Covalent Radius is a measure of the size of an atom that forms part of one covalent bond.ⓘ Covalent Radius [r_covalent]			+10% -10%

✖The Allred-Rochow's Electronegativity should be related to the charge experienced by an electron on the "surface" of an atom.ⓘ Allred Rochow's Electronegativity of Element [X_A.R]

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Allred Rochow's Electronegativity of Element Solution

STEP 0: Pre-Calculation Summary

Formula Used

Allred-Rochow's Electronegativity = (0.359*Effective Nuclear Charge)/(Covalent Radius^2)
X_A.R = (0.359*Z)/(r_covalent^2)
This formula uses 3 Variables

Variables Used

Allred-Rochow's Electronegativity - (Measured in Joule) - The Allred-Rochow's Electronegativity should be related to the charge experienced by an electron on the "surface" of an atom.
Effective Nuclear Charge - The Effective Nuclear Charge is the net positive charge experienced by an electron in a polyelectronic atom.
Covalent Radius - (Measured in Angstrom) - The Covalent Radius is a measure of the size of an atom that forms part of one covalent bond.

STEP 1: Convert Input(s) to Base Unit

Effective Nuclear Charge: 25 --> No Conversion Required
Covalent Radius: 1.18 Angstrom --> 1.18 Angstrom No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

X_A.R = (0.359*Z)/(r_covalent^2) --> (0.359*25)/(1.18^2)

Evaluating ... ...

X_A.R = 6.44570525711003

STEP 3: Convert Result to Output's Unit

6.44570525711003 Joule --> No Conversion Required

FINAL ANSWER

6.44570525711003 ≈ 6.445705 Joule <-- Allred-Rochow's Electronegativity

(Calculation completed in 00.004 seconds)

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University of Hawaiʻi at Mānoa (UH Manoa), Hawaii, USA

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< Allred Rochow's Electronegativity Calculators

Effective Nuclear Charge from Allred Rochow's Electronegativity

LaTeX Go Effective Nuclear Charge = (Allred-Rochow's Electronegativity*Covalent Radius*Covalent Radius)/0.359

Covalent Radius from Allred Rochow's Electronegativity

LaTeX Go Covalent Radius = sqrt((0.359*Effective Nuclear Charge)/Allred-Rochow's Electronegativity)

Allred Rochow's Electronegativity given IE and EA

LaTeX Go Allred-Rochow's Electronegativity = ((0.336*0.5)*(Ionization Energy+Electron Affinity))-0.2-0.744

Allred Rochow's Electronegativity of Element

LaTeX Go Allred-Rochow's Electronegativity = (0.359*Effective Nuclear Charge)/(Covalent Radius^2)

Allred Rochow's Electronegativity of Element Formula

LaTeX Go

Allred-Rochow's Electronegativity = (0.359*Effective Nuclear Charge)/(Covalent Radius^2)
X_A.R = (0.359*Z)/(r_covalent^2)

What was Allred-Rochow's contribution to electronegativity?

Louis Allred and Eugene G. Rochow considered that electronegativity should be related to the charge experienced by an electron on the "surface" of an atom: The higher the charge per unit area of atomic surface the greater the tendency of that atom to attract electrons. The effective nuclear charge experienced by valence electrons can be estimated using Slater's rules, while the surface area of an atom in a molecule can be taken to be proportional to the square of the covalent radius.

How to Calculate Allred Rochow's Electronegativity of Element?

Allred Rochow's Electronegativity of Element calculator uses Allred-Rochow's Electronegativity = (0.359*Effective Nuclear Charge)/(Covalent Radius^2) to calculate the Allred-Rochow's Electronegativity, Allred Rochow's Electronegativity of Element formula should be related to the charge experienced by an electron on the "surface" of an atom. Allred-Rochow's Electronegativity is denoted by X_A.R symbol.

How to calculate Allred Rochow's Electronegativity of Element using this online calculator? To use this online calculator for Allred Rochow's Electronegativity of Element, enter Effective Nuclear Charge (Z) & Covalent Radius (r_covalent) and hit the calculate button. Here is how the Allred Rochow's Electronegativity of Element calculation can be explained with given input values -> 6.445705 = (0.359*25)/(1.18E-10^2).

FAQ

What is Allred Rochow's Electronegativity of Element?

Allred Rochow's Electronegativity of Element formula should be related to the charge experienced by an electron on the "surface" of an atom and is represented as X_A.R = (0.359*Z)/(r_covalent^2) or Allred-Rochow's Electronegativity = (0.359*Effective Nuclear Charge)/(Covalent Radius^2). The Effective Nuclear Charge is the net positive charge experienced by an electron in a polyelectronic atom & The Covalent Radius is a measure of the size of an atom that forms part of one covalent bond.

How to calculate Allred Rochow's Electronegativity of Element?

Allred Rochow's Electronegativity of Element formula should be related to the charge experienced by an electron on the "surface" of an atom is calculated using Allred-Rochow's Electronegativity = (0.359*Effective Nuclear Charge)/(Covalent Radius^2). To calculate Allred Rochow's Electronegativity of Element, you need Effective Nuclear Charge (Z) & Covalent Radius (r_covalent). With our tool, you need to enter the respective value for Effective Nuclear Charge & Covalent Radius and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Allred-Rochow's Electronegativity?

In this formula, Allred-Rochow's Electronegativity uses Effective Nuclear Charge & Covalent Radius. We can use 3 other way(s) to calculate the same, which is/are as follows -

Allred-Rochow's Electronegativity = ((0.336*0.5)*(Ionization Energy+Electron Affinity))-0.2-0.744
Allred-Rochow's Electronegativity = sqrt(Actual Bond Energy given Electronegativity-sqrt(Bond Energy of A₂ Molecule*Bond Energy of B₂ Molecule))-0.744
Allred-Rochow's Electronegativity = Pauling's Electronegativity-0.744

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