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Electronegativity Difference Calculator

Predict bond type from Pauling electronegativities.

Compute the difference in Pauling electronegativity between two atoms and classify the bond as nonpolar covalent (Δχ < 0.5), polar covalent (0.5 ≤ Δχ < 1.7), or ionic (Δχ ≥ 1.7).

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Δχ = |χ₁ − χ₂|. Bond classification follows the Pauling thresholds.

In depth

Compute the difference in Pauling electronegativity between two atoms and classify the bond as nonpolar covalent (Δχ < 0.5), polar covalent (0.5 ≤ Δχ < 1.7), or ionic (Δχ ≥ 1.7).