设NA为阿伏加德罗常数的数值,下列叙述正确的是(  )。

作者: tihaiku 人气: - 评论: 0
问题 设NA为阿伏加德罗常数的数值,下列叙述正确的是(  )。
选项
答案 A
解析 A项,利用原子守恒,可推知氮原子数为0.2NA,A正确;B项,一个羟基中电子数为9,

相关内容:阿伏,德罗,常数,数值,叙述

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