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)
XA.R = (0.359*Z)/( rcovalent^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
XA.R = (0.359*Z)/( rcovalent^2) --> (0.359*25)/( 1.18^2)
Evaluating ... ...
XA.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)

Credits

Created by Prerana Bakli
University of Hawaiʻi at Mānoa (UH Manoa), Hawaii, USA
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National Institute of Information Technology (NIIT), Neemrana
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9 Allred Rochow's Electronegativity Calculators

Allred Rochow's Electronegativity using Bond Energies
Go Allred-Rochow's Electronegativity = sqrt(Actual Bond Energy given Electronegativity-sqrt(Bond Energy of A₂ Molecule*Bond Energy of B₂ Molecule))-0.744
Effective Nuclear Charge from Allred Rochow's Electronegativity
Go Effective Nuclear Charge = (Allred-Rochow's Electronegativity*Covalent Radius*Covalent Radius)/0.359
Covalent Radius from Allred Rochow's Electronegativity
Go Covalent Radius = sqrt((0.359*Effective Nuclear Charge)/Allred-Rochow's Electronegativity)
Allred Rochow's Electronegativity given IE and EA
Go Allred-Rochow's Electronegativity = ((0.336*0.5)*(Ionization Energy+Electron Affinity))-0.2-0.744
Electron Affinity of Element using Allred Rochow's Electronegativity
Go Electron Affinity = ((Allred-Rochow's Electronegativity+0.744+0.2)*(2/0.336))-Ionization Energy
Ionization Energy using Allred Rochow's Electronegativity
Go Ionization Energy = ((Allred-Rochow's Electronegativity+0.744+0.2)*(2/0.336))-Electron Affinity
Allred Rochow's Electronegativity of Element
Go Allred-Rochow's Electronegativity = (0.359*Effective Nuclear Charge)/( Covalent Radius^2)
Allred Rochow's Electronegativity from Mulliken's Electronegativity
Go Allred-Rochow's Electronegativity = (0.336*Mulliken's Electronegativity)-0.2-0.744
Allred Rochow's Electronegativity from Pauling's Electronegativity
Go Allred-Rochow's Electronegativity = Pauling's Electronegativity-0.744

Allred Rochow's Electronegativity of Element Formula

Allred-Rochow's Electronegativity = (0.359*Effective Nuclear Charge)/( Covalent Radius^2)
XA.R = (0.359*Z)/( rcovalent^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 XA.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 (rcovalent) 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 XA.R = (0.359*Z)/( rcovalent^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 (rcovalent). 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 4 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
  • Allred-Rochow's Electronegativity = (0.336*Mulliken's Electronegativity)-0.2-0.744
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