Across
- 1. To see family
- 5. An element in Group 2 of the periodic table, having two valence electrons that it tends to lose easily to become a 2 + cation, making it very reactive.
- 6. A row in the periodic table of the elements; also called a series.
- 9. Any electron in the outermost energy level of a neutral atom.
- 13. -An element in Group 18 on the periodic table having eight valence electrons that fill the outer energy level.
- 14. An element from either of two rows usually placed below the periodic table
- 16. Any elements in Groups 3–12 of the
- 18. Earth Metal
- 20. A representation of an atom
Down
- 2. The law that states that the properties of the elements vary with their atomic numbers in a regular, repeated pattern.
- 3. An element with characteristics between those of metals and nonmetals; also called semiconductors; located between metals and nonmetals on the periodic table
- 4. As a group the alkali metals are the least electronegative of the elements, ranging from 0.7 to 1.0 on the scale, while the alkaline earths, the next group on the table, have electronegativities ranging from about 0.9 to 1.5.Sep
- 7. A measure of an element's ability to attract and hold electrons when bonded to other atoms.
- 8. An element in Group 17 of the periodic table having seven valence electrons.
- 10. An element that typically has four or more valence electrons and that does not exhibit the general properties of metals
- 11. table, typically having one or two valence
- 12. A column of elements in the periodic table having similar valence electron arrangement, resulting in similar chemical properties
- 15. An element that is typically dense, solid, ductile, malleable, highly conductive, and chemically reactive, especially in the presence of nonmetal elements.
- 17. Any of Groups 13-16 in the periodic table
- 19. The distance from the center of an atom's nucleus to its outermost energy level