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1·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。

2·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。