問題詳情
9. Which statement is correct?
(A) Atomic radius decreases down group 17.
(B) First ionization energy decreases down group 1.
(C) Atomic radius increases across period 3 from Na to Cl.
(D) First ionization energy decreases across period 3 from Na to Cl.
參考答案
答案：B
統計：A:0,B:3,C:0,D:0,E:0
難度：計算中
用户評論
【Kai】評論
（Ａ）錯誤。原子半徑隨週期數增加而增加。