Across
- 2. Negatively charged subatomic particle.
- 6. Measure of an atom's ability to attract electrons.
- 7. Principle that electrons fill orbitals starting with the lowest energy.
- 9. Rule that electrons fill orbitals singly before pairing.
- 10. Number: Sum of protons and neutrons in an atom.
- 13. Element with properties intermediate between metals and nonmetals.
- 14. Energy required to remove an electron from an atom.
- 16. Positively charged subatomic particle.
- 19. Nuclear Charge: Net positive charge experienced by an electron in an atom.
- 21. Atoms of the same element with different numbers of neutrons.
- 22. Positively charged ion.
- 23. Exclusion principle stating no two electrons can have the same quantum numbers.
- 24. Vertical column in the periodic table.
- 25. Number: Number of protons in an atom's nucleus.
Down
- 1. Effect where inner electrons reduce the nuclear charge felt by outer electrons.
- 3. Central part of an atom containing protons and neutrons.
- 4. Neutral subatomic particle found in the nucleus.
- 5. Horizontal row in the periodic table.
- 8. Metal: Group 1 elements in the periodic table.
- 11. Negatively charged ion.
- 12. Electrons in the outermost shell of an atom.
- 15. Discrete quantity of energy.
- 17. Region in an atom where an electron is likely to be found.
- 18. Law: Properties of elements are a periodic function of their atomic numbers.
- 20. Atom or molecule with a net electric charge.