Compounds containing iron, palladium, platinum, and the rare-earth elements exhibit strong paramagnetism because they have atoms with some incomplete inner electronshells.
含有铁、钯、铂和稀土元素的化合物呈现强顺磁性，因为这些元素的原子有不完全的内电子壳层。
2
One gets a contribution from an electron outside closed shells and also a possible contribution coming from an incomplete shell or a hole in a closed shell.
化学键的形成来源于一个满壳层之外的电子，也有可能是形成于一个不完全的壳层或满壳层上的一个电子空穴。
3
In this model, the nonuniform sphere is modeled by Numbers of concentric spherical shells, and each has a fixed electron density.