Across
- 2. The size of the atom; the total distance from an atoms's nucleus to the outermost orbital of electron
- 3. Elements in which all the inner shells are complete but outer shell is incomplete.
- 4. The amount of energy needed to remove an electron from an atom.
- 6. The second group of the periodic table, including Beryllium and Calcium, along with others. They are slightly less reactive than the Alkali Metals.
- 9. The chemical elements present in the 17th group of the periodic table. They tend to be very reactive.
- 10. A positively charged ion.
- 12. A group of mostly inert gases on the far right side of the table.
- 14. A substance with high malleability and luster, as well as being conductive of heat and electricity.
- 16. Law that states that the elements when arranged in the order of their atomic numbers show a periodic variation of atomic structure and of most of their properties.
- 19. The opposite of metals
Down
- 1. A group of metallic elements in the center of the periodic table.
- 5. A Russian chemist; considered the Father of the Periodic Table
- 7. Also known as family, a column in the periodic table with similar properties and valence electron counts.
- 8. A negatively charged ion.
- 11. A section of atoms with similar properties in between those of the metals and the nonmetals.
- 13. The tendency of an atom or a functional group to attract electrons toward itself.
- 15. The first group of the periodic table, including elements like Lithium and Sodium. They are highly reactive and electropositive.
- 17. An atom with a charge
- 18. The horizontal rows on the periodic table.