proton, particle with a positive charge, neutron, particle with a neutral charge, electron, particle with a negative charge, nucleus, center of an atom, atom, smallest unit of matter, element, substance made of 1 type of atom, matter, anything that takes up space or has mass.

Atom Definitions

由
打印
嵌入

排行榜

视觉风格

选项

切换模板

)
恢复自动保存：？