positive valence

A novel atomic point valence Hi is defined according to the quantum numbers (ni) and electronegativity of element (xpi), and a new connectivity index (mB) is constructed from Hi based on the adjacent matrix.

基于原子外层价电子数ni及鲍林电负性χpii定义新的原子点价(Hi),并在邻接矩阵基础上建构元素键参数连接性指数(mB)。

A novel atomic point valence namedδit was defined according to the Kiersδiv and quantum numbers (such as ni, etc.

基于Kier的点价(δiv)及量子数(如ni)定义新的原子点价(δit), 并在邻接矩阵基础上建构连接性指数(mF)。

The atomic point valence ( g i ) of freed and combined atoms is defined as g i=(1+m 2 i)·(χ p i n  i) 0.

原子点价 (gi)定义为 :gi=(1+m2 i)· (χpin i) 0 。

A simple non -variational configuration-interaction theory is presented for the divalent atomic system with two electrons outside a closed shell core, such as an alkaline earth atom and its corresponding isoelectronic sequence.

详细分析一种简单的非变分式的组态相互作用理论，用于研究双价原子系统。

(chemistry) having a valence of three.

（化学）有三价原子的。

Containing three univalent basic atoms or radicals per molecule. Used of a base or salt.

三碱式的每个分子中含有三个一价碱性原子或原子团的。用于碱类或盐类

Containing three replaceable hydrogen atoms per molecule. Used of an acid.

三元的三代的，三碱（价）的每个分子中含有三个可取代的氢原子的。用于酸类

Containing three sodium atoms.

三钠含有三个钠原子的

The number of atoms in a molecule.

原子数，原子价，化合价单质分子中的原子数

Containing three atoms per molecule.

三原子的三代的每个分子中包含有三个原子的

Having a valence of5.

五价的有五个原子价的

A divalent atom or radical.

二价原子二价的原子或基

REDUCTION AND X-RAY IRRADIATION OF TRIVALENT SAMARIUM IONS DOPED IN BARIUM BOROPHOSPHATE

硼磷酸钡中三价钐离子的还原和X射线辐照效应

A molecule of ammonia is made up of one atom of nitrogen and three atoms of hydrogen.

氨分子包含一个氮原子和三个氢原子。

It is to reduce Eu3+ into Eu2+ with electrolyzation method.

采用电解的方法将三价铕还原成二价。

The valence atom of an alkali-metal atom has two states.

碱金属原子的价原子具有两种能态。

This ten-dollar hat is now on sale for five.

帽子大减价，原价10 美元，现价5 美元。

(chemistry) haveing a valence of four.

（化学）有四价原子的。

(chemistry) having a valence of five.

（化学）有五个原子价的。

Every carbon atom has four bonds.

每个碳原子的价键为四。

(chemistry) having a valence of two or having two valences.

（化学）有二个原子价之一的，或有两个原子价的。

A valence elect ron can move away f rom it satom, leaving it a hole.

价电子能够脱离其原子给原子留下一个空穴。