本题目来源于试卷: Classification of Matter A.1 Periodic Table Elements Classification，类别为 IB化学
[问答题]
1.The valence electro7l*f45 rq5 jfqpppr3sns in I2IX are farther from their n* )d:mu xz 7plla9wrs8uclei than the valence electrp*s8uwrm dzl xl9 a:)7ons in $Cl_2$. Explain how the size of the atoms in a covalent bond can affect the relative attraction to electrons and hence the bond's polarity.
2.Calculate the electronegativity differences and then deduce the type of bonding in the following compounds $Cl_2$,HCl,and NaClClX,HCl,and NaCl (Refer to Table 8 from the data booklet) .
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