本题目来源于试卷: Unity and Diversity A.1 Water，类别为 IB生物学
[单选题]
Which of the following statements about thqtur.eh8e m4zi 0ok8;+) 7 w/zvexid be dipolarity of the water molecule ab o ;.bq71ael3gwt 5myre tr1;7a b y5.l3 qeowtbgmue?
I. Oxygen attracts the shared electrons stronger than hydrogen.
II.Hydrogen atoms are partially negative.
III.The shared electrons spend more time closer to oxygen.
A. I and II
B. II and III
C. I and III
D. I, II, and III
参考答案: C
本题详细解析:
Statement I is correct. Oxygen has a higher elec /t1* gc4+hlr eaxjls/tronegativity compared to hydrogen. This means that oxygen will attracegx/rtl*4 jl/s +c1aht shared electrons more strongly.
Statement II is false. Since the shared electrons between oxygen and hydrogen spend more time near oxygen, the hydrogen in the water molecule becomes partially positive.
Statement III is true because oxygen attracts the shared electrons more strongly resulting in the shared electrons spending more time closer to the oxygen atom.
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