Nucleus
- The nucleus is the small, dense, positive region at the centre of an atom.
- It contains most of the atom’s mass but very little of its volume.
Radius
The radius of the nuclei is very small compared to the total size of the atom. It’s usually around 1/10,000th of the radius of the entire atom.
Its absolute radius is usually around
Charge
- The nucleus is made up of protons (positively charged particles) and
neutrons (neutral particles).
- Because of this, the overall charge of the nucleus is positive.
flashcards
| Question | Answer |
|---|---|
| What is the nucleus in an atom? | The nucleus is the small, dense, positive region at the centre of an atom, containing most of the atom’s mass but very little of its volume. |
| How does the radius of the nucleus compare to the total size of the atom? | The radius of the nucleus is very small, usually around 1/10,000th of the radius of the entire atom, typically about |
| What particles make up the nucleus, and what is their charge? | The nucleus is made up of protons (positively charged particles) and neutrons (neutral particles), giving the nucleus an overall positive charge. |