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[主观题]
镧系元素的+2、+3、+4价态离子中属于抗磁性的是____________________、____________________、______
______________、____________________,它们的4f轨道中分别有____________________、____________________、____________________、____________________个电子。若仅考虑自旋运动对磁矩的贡献,其中+3价态磁矩最大的离子是____________________,最小磁矩的离子是____________________和____________________。
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