Across
- 5. elements with properties that fall between those of metals and nonmetals
- 7. the elements in Group 8A of the periodic table
- 10. a visual model of the most likely locations for the electrons in an atom
- 13. elements that form a bridge between elements on the left and right sides of the periodic table
- 14. a neutral subatomic particle that is found in the nucleus of an atom
- 16. atoms of a given element that have different numbers of neutrons and different mass numbers
- 18. an electron that is in the highest occupied energy level of an atom
- 20. the elements in Group 7A of the periodic table
- 21. a positively charged subatomic particle that is found in the nucleus of an atom
- 22. the sum of the number of protons and neutrons in the nucleus of an atom
- 24. a state in which all the electrons in an atom have the lowest possible energies
Down
- 1. the arrangement of electrons in the orbitals of an atom
- 2. the possible energies that electrons in an atom can have
- 3. elements that are good conductors of heat and electric current
- 4. the elements in Group 1A of the periodic table, not including hydrogen
- 6. the elements in Group 2A of the periodic table
- 8. a negatively charged subatomic particle that is found in the space outside of the nucleus of an atom
- 9. a column of elements in a periodic table
- 11. a unique number for each element that equals the number of protons in an atom of that element
- 12. one twelfth the mass of carbon-12 atom
- 15. a region of space around the nucleus where an electron is likely to be found
- 17. elements that are poor conductors of heat and electric current
- 19. a row in a periodic table of elements
- 23. the pattern of repeating properties displayed by elements in the periodic table