Zusammenfassung der Ressource
Atomic structure
- Atoms consist of a central nucleus
surrounded by shells of electrons
- Nucleus is made of
protons and neutrons
- The mass of protons and
neutrons is 1 and electron is
0
- Protons- positive charge
- Neutrons- no charge
- Electron- negative charge
- Overall the atom has no
charge as the number of
electrons in the shells is equal
to the number of protons in the
nucleus
- Top number is mass number
- Bottom number is atomic number
- Number of protons is the atomic number
- Number of protons and neutrons (nucleons) is the mass number
- Number of neutrons is mass number-proton number