如图是氧元素的原子结构示意图则下列说法错误的是a核内有8个质子b最外层电子数为6个c氧元素在化合物中的化合价通常为 2价d氧原子在 Template




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tomski如图是氧元素的原子结构示意图则下列说法错误的是a核内有8个质子b最外层电子数为6个c氧元素在化合物中的化合价通常为 2价d氧原子在 coloring