| ① | ② | ③ | ④ | ⑤ | ⑥ |
原子半径(10-10m) | 1.30 | 0.82 | 0.99 | 1.11 | 0.90 | 1.18 |
最高或最低化合价 | +2 | +3 | +7 | +4 | +2 | +3 |
| | -1 | -4 | | |
A.Ca→1s22s22p63s23p63d2 | B.O2¯→1s22s22p6 |
C.Cl¯→1s22s22p63s23p5 | D.Fe→1s22s22p63s23p63d8 |
A.4 | B.7 | C.5 | D.9 |
A.熔点:CO2<KCl<SiO2 | B.沸点:乙烷>戊烷>2-甲基丁烷 |
C.密度:苯<水<1,1,2,2-四溴乙烷 | D.热稳定性:HF>HCl>H2S |
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