由于原子核内的质子数与核外的电子数相等所以原子不显电性不同元素原子核内质子数不同核外电子数也不同. 题目和参考答案——青夏教育精英家教�—— Template




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tomski由于原子核内的质子数与核外的电子数相等所以原子不显电性不同元素原子核内质子数不同核外电子数也不同. 题目和参考答案——青夏教育精英家教�—— coloring