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(tuán)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(zhì)分子中的原子數(shù)

The hydrocarbon radical, C6H13, having valence1.

己基碳?xì)浠衔锘珻6H13，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(jù)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(xué)）有三價原子的。

(chemistry) haveing a valence of four.

（化學(xué)）有四價原子的。

(chemistry) having a valence of five.

（化學(xué)）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(xué)）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(fù)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?xì)浠系幕鶊F(tuán)，C4H9，具有丁烷的結(jié)構(gòu)，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(jié)合在一起的一類化合物。

Spectrochemical order and valence shell electronic structure of coordination atoms;

光譜化學(xué)序列與配位原子的價層電子結(jié)構(gòu)

Having valence3.

三價的化合價為3的