chapter 4

4. the distance between from the center of the nucleus to the electrons in its outermost energy levels
6. elements on row one and two the ones on the first row are rare and the second are radioactive
7. set of elements in the same column on the periodic table
8. a table of chemical elements arranged in a way that displays their periodic properties in relationship to their atomic number
9. consists of elements chemical symbols surrounded by the atomic's valence electrons
11. elements that have characteristics between those of metal and nonmetals
13. elements in group 2 and has two valence electrons
14. what do scientist call a row on the periodic table
15. elements in group 1 and has one valence electron
16. 8 valence electrons and have full outer energy levels

1. electrons in the outermost energy level of a neutron level
2. states that the properties of elements vary in a periodic way with their atomic numbers
3. has four or more valence electrons and do not exhibit the general properties of metals
5. elements in groups 3-12 and has one or two valence electrons
10. elements in group 17 and has 7 valence electrons
11. almost 80% of elements have this and has few valence electrons
12. elements in groups 13-16 and include metals, nonmetals, and metalliods
17. the measure of an element's ability to attract and hold electrons when bonded to another atom