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    the nonpolar molecule BeH2 contains

    a)one polar bond
    b)two polar bonds
    C)one nonpolar bond
    d)two nonpolar bonds


    Which of the following covalent bonds would be the most polar

    A)H-C
    B)H-N
    C)H-CI
    D)H-O

    How many valence electrons does the electrons does the element with the following electron configuration have {Xe} 6s1~4f14~5d9

    1
    9
    14
    24

    covalent bonding usually occurs between two nonmetallic elements (T/F)

    polar bonds always produce molecules that are polar (T?F)
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    the nonpolar molecule BeH2 contains

    d)two nonpolar bonds (Be is not electronegative, therefore cannot polarise bonds)


    Which of the following covalent bonds would be the most polar

    B)H-N (Nitrogen is the most electronegative)


    How many valence electrons does the electrons does the element with the following electron configuration have {Xe} 6s1~4f14~5d9

    24 (but not sure on this one)


    covalent bonding usually occurs between two nonmetallic elements (F) (usually a metallic element and a non metallic one)


    polar bonds always produce molecules that are polar (F)

    There you go I hope that helps a biit (it might not all be correct though - anyone feel free to correct me if i'm wrong)
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    (Original post by Chicken)
    B)H-N (Nitrogen is the most electronegative)
    I'm more inclined to say that O is more electronegative than N so the O-H would be more polar (proof of this would be shown in a proton NMR scan).
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    can anyone tell me why do most atoms form chemical bonds?
 
 
 
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