[填空题]
1.Explain the difference in physical properties of the following using knowledge of chemical structure and bonding:1.The boiling point of hydrochloric acid(HCl) is than that of lithium chloride (LiCl).
2.Calcium bromide($CaBr_2$) conduct electricity in a molten state and aqueous solution, and bromine ($Br_2$)
.
3.The boiling point of $HI$ is than $I_2X$
2.Arrange bromine($Br_2$), potassium and potassium bromide in order of increasing boiling points. < <
参考答案: 空格1: less
空格2: can
空格3: can't
空格4: lower
空格5: bromine
空格6: potassium
空格7: potassium bromide