电负性有计算公式,由亲和能数据和电离能数据得到.
电负性是描述原子在分子中吸引成键电子的能力.
应用:判断化学键的离子键性
比如 Na和Cl的电负性差值为2.22着对应两者之间的化学键应该是离子键
还有其他的应用,比如判断有机物中原子所带电荷
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