Chemistry

3. cubic, every atom has 8 neighbors including sodium potassium iron chromium and tungsten.
5. unit, the lowest whole number ratio of ions in an ionic compound.
7. formula, shows the kinds and numbers of atoms in the smallest representative unit of a substance.
8. number, the number of ions of opposite charge that surround the ion in a crystal.
10. mixtures compared to two or more elements.
11. , a solid in which the atoms, ions, or molecules are arranged in an ordinary, repeating, three dimensional pattern called a crystal lattice.
15. Rule, in forming compounds atoms tend to achieve the electron configurations of noble gas.
16. Dot Structures, diagrams that show valence electrons as dots.
17. bonds, electric forces that hold ions together in ionic compounds
19. substances that can be drawn into wires; they are ductile and malleable, good conductors.

1. Ions, Ions that are produced when atoms of chlorine and other halogens gain electrons.
2. close-packed arrangement, has 6 sides and is closely packed includes magnesium zinc and cadmium.
4. Ions with a positive charge.
6. bonds, consist of the attraction of free-floating valence electrons for the positively charged metal ions.
9. write the electron configuration of Cd2+.
11. any atom or group of atoms with a positive charge.
12. Ions with a negative charge.
13. compounds, compounds composed of cations and anions.
14. cubic, every atom has 12 neighbors.
18. electron, electrons in the Highest occupied energy level of an element's atoms.