Chemistry Vocab

3. a negatively charged ion
6. They are reactive, electropositive, divalent metals, and form basic oxides which react with water to form comparatively insoluble hydroxides.
7. any of a class of substances characterized by high electrical and thermal conductivity as well as by malleability, ductility, and high reflectivity of light.
8. rare gases that include helium, neon, argon, krypton, xenon, and usually radon and that exhibit great stability and extremely low reaction rates
9. elements that have partially filled d orbitals
12. a positively charged ion
14. a horizontal row of elements on the periodic table.
15. devised the periodic table
17. The physical and chemical properties of the elements are periodic functions of their atomic numbers
18. an element whose properties are intermediate between those of metals and solid nonmetals
19. a vertical column in the Periodic Table

1. a measure of an atom's ability to attract shared electrons to itself.
2. a chemical element that lacks the characteristics of a metal.
4. They are reactive nonmetallic elements that form strongly acidic compounds with hydrogen from which simple salts can be made.
5. The elements of group 1 and group 2 and the elements from group 13 to group 18 of the periodic table are known as representative elements
10. They are very reactive, electropositive, monovalent metals forming strongly alkaline hydroxides.
11. an atom or molecule with a net electric charge due to the loss or gain of one or more electrons
13. the total distance from the nucleus of an atom to the outermost orbital of its electron.
16. the amount of energy required to remove an electron from an isolated atom or molecule