25. In the Lewis structure of I3 – , there are _________ electrons around the central iodine atom. (A) 4 (B) 6 (C) 8 (D) 10 (E) 12

25. In the Lewis structure of I₃ – , there are _________ electrons around the central iodine atom.
(A) 4
(B) 6
(C) 8
(D) 10
(E) 12

答案：登入後查看
統計： A(3), B(23), C(8), D(21), E(0) #1970206

詳解 (共 1 筆)

鄭曜綦

B1 · 2020/05/19

#3974066

3對lone pairs有6顆電子，...

(共 33 字，隱藏中）

前往觀看

63. A chemist needs to prepare a buffered solution using one of the following acids (and its sodium salt): HA (Ka = 1.4 × 10-3 ), HB (Ka = 9.8 × 10-6 ), HC (Ka = 8.4 × 10-5 ), HD (Ka = 3.5 × 10-7 ), HE (Ka = 1.9 × 10-8 ). To prepare a solution buffered at pH = 5.10, which system will work best (a buffer with the best capacity)? (A) HA and its sodium salt (B) HB and its sodium salt (C) HC and its sodium salt (D) HD and its sodium salt (E) HE and its sodium salt

25. In the Lewis structure of I₃ – , there are _________ electrons around the central iodine atom.
(A) 4
(B) 6
(C) 8
(D) 10
(E) 12

詳解 (共 1 筆)

相關試題

相關試卷