题型:单选题 题类:常考题 难易度:普通
电子式、化学式或化学符号及名称的综合a
1 |
① |
|||||||
2 |
② |
③ |
④ |
|||||
3 |
⑤ |
⑥ |
⑦ |
⑧ |
||||
4 |
⑨ |
⑩ |
| IA | IIA | IIIA | IVA | VA | VIA | VIIA | 0 |
2 | ⑥ | ⑦ | ⑧ | |||||
3 | ① | ③ | ⑤ | ⑨ | ⑩ | |||
4 | ② | ④ |
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