根据下列短周期元素性质的数据判断,下列说法正确的是
| | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ | |||
| 原子半径/10-10 m | 0.66 | 1.36 | 1.23 | 1.10 | 0.99 | 1.54 | 0.70 | 1.18 | |||
| 最高或最低化合价 | | +2 | +1 | +5 | +7 | +1 | +5 | +3 | |||
| -2 | | | -3 | -1 | | -3 |
|