TEMPO.CO, Jakarta - Atom merupakan bagian terkecil dari materi atau unsur dan sebagai salah satu konsep ilmu pengetahuan paling tua di dunia. Kata atom berasal dari bahasa Yunani, yaitu atomos, yang ...

It also tells us that chlorine has 18 neutrons (35 - 17) and, as the number of electrons and protons are equal in a neutral atom, chlorine also has 17 electrons. The relative mass of a nucleus is ...

Atoms have a central positive nucleus. Most of the mass of an atom is found in the nucleus. 1913 Bohr In-depth work on Rutherford's model showed it had limitations. The electrons should just ...