The first ionization potentials of the noble gases provide a measure of how firmly the outer electrons are held by the effective nuclear charge.
稀有气体的一阶电离势提供了一个评价的标准，能衡量外层电子被有效核电荷束缚的强度。
Because of its lower effective nuclear charge, xenon is more easily oxidized than krypton.
因为氙的有效荷电荷较低，所以氙比氪容易被氧化。
Because of its lower effective nuclear charge, xenon is more easily oxidized than krypton.
因为氙的有效荷电荷较低，所以氙比氪容易被氧化。
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