Pauling Electronegativity Difference & Bond Polarity Calculator

Electronegativity measures an atom's ability to attract shared electron pairs in a chemical bond. Linus Pauling developed the standard electronegativity scale where Fluorine is the most electronegative element (3.98).

To use the Pauling Electronegativity Difference & Bond Polarity Calculator, enter your Element A Electronegativity (χA), Element B Electronegativity (χB). The calculator instantly computes Electronegativity Difference, Chemical Bond Type Classification and more. Results update in real time as you change any input — no submit button needed.

How to Use This Calculator

Enter your Element A Electronegativity (χA) (e.g. 3.98 in Pauling scale) and Element B Electronegativity (χB) (e.g. 2.20 in Pauling scale). Results update instantly as you type — adjust any value to compare scenarios.

The Formula

Electronegativity Difference Δχ = | χ_A - χ_B |

Percentage Ionic Character % = [ 1 - exp( -0.25 × (Δχ)^2 ) ] × 100

Thresholds: Non-Polar Covalent (Δχ < 0.4), Polar Covalent (0.4 to 1.7), Ionic (Δχ > 1.7)

Worked Example

Hydrogen-Fluorine Bond:

Δχ = | 3.98 - 2.20 | = 1.78 Pauling units.

Bond Type = IONIC / HIGHLY POLAR (54.8% Ionic Character).

Understanding Your Result

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