PERIODIC TABLE CROSSWORD 5
18
10
11
Across
2. Group I metals
4. Elements in the middle of the periodic
table are the metals.
5. The sum of the protons and neutrons is
the number
6. Inactive gases.
7. The horizontal rows are called
8. Most of the elements are
10. Nonmetals tend to form lons.
Down
1. Most active nonmetals
2. Group II metals
3. Atomic number is the number of -
7. Metals tend to form_lons.
9. The elements are arranged by atomic
11. The vertical columns are called families
or -