The atomic number of an element X is 15.The number of electrons in an anion of X is?但是eleltrons不是等同atomic number吗?A 10B 12C 15D 18
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What is the atomic number of an element?ps:Please answered in English
The atomic number of an element X is 15.The number of electrons in an anion of X is?但是eleltrons不是等同atomic number吗?A 10B 12C 15D 18
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