氧元素和钠元素的原子结构示意图分别为氧元素是非�属元素钠元素是�属元素它们的化学性质有明显差异其本质原因氧原子最外层有6个电子易得 Template




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tomski氧元素和钠元素的原子结构示意图分别为氧元素是非�属元素钠元素是�属元素它们的化学性质有明显差异其本质原因氧原子最外层有6个电子易得 coloring