Across
- 1. The maximum number of electrons that the second and orbital can hold.
- 4. Tells us the number of protons in an atom. Will also be the number of electrons in that atom.
- 6. The table that organises elements by atomic number and properties.
- 7. A type of ion that has lost electrons and has a positive charge.
- 8. The smallest unit of an element that retains its properties.
- 10. The charged form of an atom.
- 12. The positively charged particle in an atom’s nucleus.
- 14. The two letter code for each element. Always starts with a capital letter.
- 15. A vertical column in the periodic table.
Down
- 2. The maximum number of electrons the first and last orbital can hold.
- 3. The total number of protons and neutrons in an atom.
- 5. The negatively charged particle that orbits the nucleus.
- 8. A type of ion that has gained electrons and has a negative charge.
- 9. The electrons that are found in the outermost orbital.
- 11. The horizontal rows in the periodic table.
- 13. The central part of an atom containing protons and neutrons.