6.下列说法正确的是 A.同一元素各核素的质量数不同但它们的化学性质几乎完全相同b.任何元素的原子都是由核外电子和核内中子质子构成的c Template




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tomski6.下列说法正确的是 a.同一元素各核素的质量数不同但它们的化学性质几乎完全相同b.任何元素的原子都是由核外电子和核内中子质子构成的c coloring