電子

1. Origins, structure, and basic meaning

• Structure: 電子 is read as でんし and is a noun for an electron, a negatively charged particle found around an atomic nucleus.
• Basic usage: Charge appears in 負の電気を帯びた電子, while position appears in 原子核の周りにある電子.

2. Common pitfalls and similar expressions

• Particle and electronic compounds
  • Here 電子 is the particle electron, distinct from its modifier use for electronic devices in compounds such as 電子辞書.
• Difference from 原子
  • 原子 is an atom as a whole, while 電子 is one type of particle making up the atom.