产生chemical bonding16615 chemical bonding共有三种类型:ionic
键重点掌握金属导电的原因是因为有free electrons26615 ionic
活动作品47ionicandcovalentcompound离子化合物和共价化合物
why aluminum chlorate 是 covalent compounds? 而 aluminum
或者解题步骤分成三步:11566structure一共有四种:giant ionic
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