一种元素的原子可以互相化合，也可以与别的元素的原子化合，这种能力取决于其原子序数。

The ability of the atoms of an element to combine with one another or with the atoms of other elements depends on its atomic number.

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一种元素的原子可以互相化合，也可以与别的元素的原子化合，这种能力取决于其原子序数。

The ability of the atoms of an element to combine with one another or with the atoms of other elements depends on its atomic number.

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