n.效价；期望值（人事管理术语），价；原子价；化合价；效价

The valence of an atom in a molecule determines its reactivity and bonding capacity.
这个原子在分子中的价态决定了它的反应活性和结合能力。
In chemistry, the valence electrons are those that participate in chemical bonding.
在化学中，价电子是指参与化学键合的电子。
The noble gases have a full valence shell, making them unreactive with other elements.
惰性气体具有满的价电子层，因此它们与其他元素不反应。
Carbon has four valence electrons, allowing it to form strong covalent bonds with other atoms.
碳有四个价电子，使其能够与其它原子形成牢固的共价键。
The valence bond theory helps explain the structure and stability of molecules.
价键理论有助于解释分子的结构和稳定性。
The halogens have a valence of one, meaning they typically gain an electron to achieve a stable configuration.
卤素的价数为1，意味着它们通常会获得一个电子以达到稳定的构型。
The octet rule states that atoms tend to have a full valence shell of eight electrons for stability.
八隅体规则指出，原子倾向于拥有八个价电子的满壳以求稳定。
Transition metals can exhibit variable valence, forming complexes with different numbers of ligands.
过渡金属可以表现出可变的价态，与不同数量的配体形成复合物。
The concept of valence plays a crucial role in understanding periodic trends in atomic properties.
价的概念对于理解原子性质的周期性趋势至关重要。
Valence electrons are responsible for the colors of certain transition metal ions in aqueous solutions.
某些过渡金属离子在水溶液中的颜色是由价电子决定的。