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? 發問於 教育及參考書標準及測試 · 1 十年前

AgCl 有covalent character?

我知係有但係用 electronegativity difference 黎explain定係用polarizability + polarizing power 黎explain? 2個都解得通... which one is correct?

2 個解答

評分
  • 莫愁
    Lv 6
    1 十年前
    最愛解答

    用 electronegativity difference 黎explain未必可行.You should think about other examples such as NaCl and LiCl. Comparing them:

    Both are group1 metals with only an unique different: Li is more polazing than Na due to its high charge density caused by its smaller cation.[Na has one more quantum shell and thus has a weaker effective nuclear charge. This explain why Na+ is not as polarizing as Li+]

    Both have different electronegativities between Na(0.9) & Cl(3.0) [different = 2.1]and Li(1.0) & Cl(3.0) [different = 2.0] when using Pauling scale to determine their electronegativties between group 1 metals and halogens. However only polarizability + polarizing power 黎explain ,才能explain why NaCl are soluble in H2O and LiCl don't [LiCl only dissolves in alcohol] 及NaCl has ionic character more while LiCl has covalent character more.

    Hence using polarizability + polarizing power 黎explainAgCl 有covalent character is more suitable.

  • 1 十年前

    我會揀Polarizability同polarizing power 囉,因為有Covalent character即係有Distortion of electron cloud,咁答Ag 有high polarizing power , distort 左Cl electron cloud會合理d

    資料來源: My Cerebrum
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