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18 August, 19:16

Which molecule has the greatest difference in electronegativity (DE) between the two different elements? A. CO_2 B. H_2S C. NH_3 D. H_2O

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  1. 18 August, 19:45
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    Water has the greatest ΔEN

    ΔEN H₂O → 3.4 - 2.1 = 1.3 Option D.

    Explanation:

    We should find the Electronegativity data in the Periodic table for all the elements:

    C : 2.6

    O: 3.4

    H: 2.1

    S: 2.6

    N: 3.0

    a. ΔEN CO₂ → 3.4 - 2.6 = 0.4

    b. ΔEN H₂S → 2.6 - 2.1 = 0.5

    c. ΔEN NH₃ → 3 - 2.1 = 0.9

    d. ΔEN H₂O → 3.4 - 2.1 = 1.3
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