Across
- 2. Table- an arrangement of the elements in order of their atomic numbers such that elements with similar properties fall in the same group.
- 4. Number- the number of protons in the nucleus of an atom.
- 6. negatively charged particles found within the electron cloud.
- 7. positively charged particles found in the nucleus.
- 8. the smallest particle into which an element can be divided.
Down
- 1. uncharged particles that are found within the nucleus of an atom.
- 3. the center of an atom made up of protons and neutrons.
- 5. Number- the sum of the number of protons and neutrons in the nucleus of an atom.
- 6. Cloud- a region around the nucleus of an atom where electrons are likely to be found.