具有n→π * 和π→π * 两种电子跃迁的某化合物的紫外吸收光谱如图,其中n→π * 跃迁所产生的吸收带λ max 为______nm,π→π * 跃迁所产生的吸收带λ max 为______nm,判断的依据是______。
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