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26 July, 01:54

Be sure to answer all parts. List the following bonds in order of decreasing ionic character: cesium to fluorine, chlorine to chlorine, bromine to chlorine, silicon to carbon. (Enter the two elements of the bond into the appropriate box: CsF, ClCl, BrCl, SiC)

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  1. 26 July, 03:48
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    Trend in ionic character of bonds: Cs-F > Si-C > Br-Cl > Cl-Cl

    (most) (least)

    Explanation:

    We know that, percentage ionic character of a bond is proportional to electronegativity difference between two constituting atoms.

    Atom Electronegativity

    Cs 0.7

    F 4.0

    Cl 3.0

    Br 2.8

    Si 1.8

    C 2.5

    Bond Electronegativity difference

    Cs-F 3.3

    Cl-Cl 0.0

    Br-Cl 0.2

    Si-C 0.7

    So trend in ionic character of bonds:

    Cs-F > Si-C > Br-Cl > Cl-Cl

    (most) (least)
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