本题目来源于试卷: Models of Bonding & Structure B.3 The Metallic Model，类别为 IB化学
[问答题]
Metallic bonding characterizes th4lvbk,i vf7l ,;e 1pgme bondf4v. qpj(* ydwz l)jq1s bw6m3 o+pyi)ing present in the elemental form of the metalj ppy ( 4q*6.vsz+1)lwid bqwym3) ofjs on the periodic table.
1.Describe features of metallic bonding.
2.Describe 3 common properties of metals that result from metallic bonding.
3.Solid sodium chloride is brittle while sodium metal is not. Explain this difference in properties.
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