Models of Bonding & Structure B.3 The Metallic Model (id: fadb90c1c)

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]
Lithium is a metal in group 1 of the ;.bw/h0c0i kt5dbt8w uyic *n periodic tabdtu1+3tctb sc 8nfh.1 6yt d2gle. The group 1 metals react with bromine 6d1h+t n3 gb.f82tttdcc1usy to form soluble bromide salts, which all have the same lattice structure.
1.The melting points of the group 1 metals and their bromide salts are shown in the graph.


1.Explain the variation in the melting points of the group 1 metals.

2.The following diagram shows the electron density distributions formed when bromide ions interact with lithium and sodium ions.

Based on the diagram, suggest why the melting point of lithium bromide is lower than that of sodium bromide.
2.Lithium is a good electrical conductor, whereas lithium bromide is an electrical insulator.
.1.Explain the difference in the electrical conductivities of lithium and its bromide salt.
.2.Explain how water interacts with lithium bromide to produce an electrically conductive solution.

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