The combining capacity of an atom or a radical determined by the number of electrons that it will lose, add, or share when it reacts with other atoms.
化合價，原子價原子或原子團與其它原子反映時由所失、增加成共享的電子數(shù)目決定的化合能力
The number of atoms in a molecule.
原子數(shù)，原子價，化合價單質分子中的原子數(shù)
The hydrocarbon radical, C6H13, having valence1.
己基碳氫化合物基，C6H13，原子價為1
The silicon atom occupies the space opening(interstice)between the oxygen atoms and shares four valence electrons with the four oxygen atoms.
硅原子占據了氧原子之間的空隙并且和四個氧原子共用化合價。
(chemistry) having a valence of three.
（化學）有三價原子的。
(chemistry) haveing a valence of four.
（化學）有四價原子的。
(chemistry) having a valence of five.
（化學）有五個原子價的。
a compound derived from ammonia by replacing hydrogen atoms by univalent hydrocarbon radicals.
氨中的氫原子被單價烴基替代后形成的化合物。
(chemistry) having a valence of two or having two valences.
（化學）有二個原子價之一的，或有兩個原子價的。
A set of eight valence electrons in an atom or ion, forming a stable configuration.
八重態(tài)在一個原子或離子中，形成穩(wěn)定組態(tài)的一組八個化合價電子
" Ligand： Atom, group (see functional group), or molecule attached to a central atom, usually of a transition element, in a coordination or complex compound."
配位體:與一個中心原子相連的原子或分子，通常是過渡元素，形成共價鍵化合物或復合離子。
Having a valence of5.
五價的有五個原子價的
A hydrocarbon radical, C4H9, with the structure of butane and valence1.
丁基一種碳氫化合的基團，C4H9，具有丁烷的結構，原子價為
A divalent atom or radical.
二價原子二價的原子或基
This ten-dollar hat is now on sale for five.
帽子大減價，原價10 美元，現(xiàn)價5 美元。
Peroxide: Any of a class of chemical compounds in which two oxygen atoms are linked by a single covalent Bond.
過氧化物: 任何由兩個氧原子以單個共價鍵相互結合在一起的一類化合物。
Spectrochemical order and valence shell electronic structure of coordination atoms;
光譜化學序列與配位原子的價層電子結構
Having valence3.
三價的化合價為3的