A.X 位于第七周期,第ⅣB族 | B.X是非金属元素 |
C.XO2是酸性氧化物 | D.X元素的化合价有+2和+4 |
A.1s2 | B.3s2 | C.4s1 | D.3s1 |
A.2,8,18,32,32,18,8 | B.2,8,18,32,50,8 |
C.2,8,18,32,18,8 | D.2,8,18,32,50,18,8 |
A.2Cl―→Cl—Cl | B.1s22s22p63s1―→1s22s22p6 |
C.2px22py12pz1―→2px12py12pz2 | D.3s23p5―→3s23p6 |
主族 周期 | ⅠA | ⅡA | ⅢA | ⅣA | ⅤA | ⅥA | ⅦA | 0 |
2 | | | | | ① | | ② | |
3 | | ③ | ④ | ⑤ | | ⑥ | ⑦ | ⑧ |
4 | ⑨ | | | | | | ⑩ | |
© 2017-2019 超级试练试题库,All Rights Reserved.