原子能机构粮食及环保电子学习和快速能力建设合作中心

IAEA Collaborating Centre for eLearning and Accelerated Capacity Building for Food and Environmental Protection; EACB Collaborating Centre

为了释放电子，必须使电子高速旋转而足以摆脱原子核的束缚。

To free electrons, something has to make them whirl fast enough to break away from their nuclei.

电子非常轻，因此在原子量中甚至没有计算它。

Electrons weigh very little, so they aren’t even counted in the atomic weight.

(原子的)电子壳层

электронная оболочка атома

原子序数, 原子电荷

атомный номер, атомный заряд