covalency

So you can see that polar covalency is a tendency towards ionic bonding.

所以你看得出极性共价就是，趋向离子键的。

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And why did he call it polar covalency?

为什么要称它为极性共价呢？

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Investigation of Covalency and Spectrum Shifts in 3 d Transition-metal Compounds

3d过渡晶体化学键共价性和光谱位移研究

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The results of calculation show that the bonds between lanthanum and coordination atoms have certain extent covalency.

结果表明，镧与配位原子间的键具有一定程度的共价性。

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The ordering of the magnitude for bond covalency is La-O

共价性的大小次序为La-O

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The relationship between bond valence and bond covalency has been investigated by a semiempirical method.

用一种半经验方法研究了固体材料中键电荷与键共价性的关系.

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It is found that Li ions have more space to move, and its covalency is very strong.

分析发现，Li离子在晶胞内有更大活动空间，共价性很强。

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The results obtained indicate the influence of the host lattice, radius of positive ion and the covalency of the Pr 3+-O 2-bond on the spectral character.

探讨了基质晶格、阳离子半径、Pr3＋－O2－键的共价性等因素对光谱性质的影响；

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