阿摩線上測驗
22. How many unpaired electrons are there in the complex ion 
? For this ion, the nitrate ligands produce a very strong crystal field. (Co: [Ar]4s²3d⁷)
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5
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統計： A(3), B(0), C(0), D(1), E(0) #3278697
統計： A(3), B(0), C(0), D(1), E(0) #3278697
