名词
中文翻译：价电子数
同义词：
['valency number', 'valence electron number例句：1. The valencenumber of a metal is determined by itschemical properties.（金属的价电子数由其化学性质决定。）2. In chemistry', 'the valence number represents the number ofelectrons that can be donated to anatom.（在化学中，价电子数代表可以向原子捐赠的电子数量。）']
例句：
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1. The valencenumber of a metal is determined by itschemical properties.
金属的价电子数由其化学性质决定。
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2. In chemistry,the valence number represents the number ofelectrons that can be donated to anatom.
在化学中，价电子数代表可以向原子捐赠的电子数量。
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3.The valence number of a compoundis the sum of the valence numbersof its constituent elements.
化合物的价电子数是其组成元素的价电子数之和。