配套习题- 化合价及其表示方法 -【青果学院】

1/5单选题

难度：

1.在水中，氧显-2价的原因是

A	1个氧原子得到2个电子
B	1个氧原子失去2个电子
C	2个共用电子对偏离氧原子
D	2个共用电子对偏向氧原子

正确答案：RA==

5Zyo5rC05Lit77yM5rCi5rCn56a75a2Q5piv6Z2g5YWx55So55S15a2Q5a+557uT5ZCI5Yiw5LiA5Z2X55qE77yM5rCi5rCn5Y6f5a2Q5pyJMuS4quWFseeUqOeUteWtkOWvue+8jOeUseS6juawp+WOn+WtkOeahOaguOeUteiNt+aJgOW4puato+eUteiNt+Wkmu+8jOWQuOeUteWtkOiDveWKm+avlOawouW8uu+8jOaVhTLkuKrlhbHnlKjnlLXlrZDlr7nlgY/lkJHmsKfljp/lrZDvvIzmsKfljp/lrZDlsLHmmL4tMuS7t++8m+WBj+emu+awouWOn+WtkO+8jOawouWOn+WtkOWwseaYvisx5Lu3

2/5单选题

难度：

2.下列有关化合价的说法正确的是

A	硝酸铵中氮元素的化合价有两种
B	H₂O₂和H₂O中氧元素的化合价均为-2价
C	金属铝中铝元素的化合价为+3价
D	化合物中非金属元素的化合价均显负价

正确答案：QQ==

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

3/5单选题

难度：

3.下列有关化合价的说法，正确的是

A	金属元素都显正价，非金属元素都显负价
B	一种元素只有一种化合价
C	任何化合物中元素的正负化合价都等于零
D	在单质里，元素的化合价为零

正确答案：RA==

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

4/5单选题

难度：

4.次氯酸(HClO)具有杀菌消毒的作用，HClO中氯元素的化合价表示正确的是

A
B
C
D

正确答案：Qw==

6K6+SENsT+S4reawr+WFg+e0oOeahOWMluWQiOS7t+S4ujxpPng8L2k+44CC5YiZ77yIKzHvvIkrPGk+eDwvaT4r77yILTLvvIk9MO+8jDxpPng8L2k+PSsx5Lu377ybPGJyPuihqOekuuWFg+e0oOeahOWMluWQiOS7t++8jOW6lOivpeWwhuWMluWQiOS7t+agh+WcqOivpeWFg+e0oOespuWPt+eahOato+S4iuaWue+8jOaVheato+ehrueahOihqOekuuaWueazleS4ujxpbWcgd2lkdGg9MzQgaGVpZ2h0PTM0IHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvN0QvNUUvckJBQ0UxVGNEQ3FEdWtPRUFBQUJPSy04Um9FMzU2LnBuZyIgPu+8jEPpobnmraPnoa7jgII=

5/5单选题

难度：

5.下列关于化合价的说法中，正确的是①在O2中，氧元素的化合价为-2价②在Na2O中，钠元素的化合价为+1价，氧元素的化合价为-2价③非金属元素在化合物中总是显负价④一种元素在同一种化合物中，可能有不同的化合价

A	①②④
B	①④
C	①③④
D	②④

正确答案：RA==

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