Across
- 3. vertical columns of elements arranged in order of increasing atomic number on the periodic table
- 7. the energy required to remove an electron from a gaseous atom
- 9. rule states that atoms tend to gain, lose, or share electrons in order to acquire a full set of 8 valence electrons
- 10. a highly reactive group 17 element
- 11. has properties of metals and nonmetals
Down
- 1. something made up of more-or-less interdependent elements or parts
- 2. relative ability of atoms to attract electrons in a chemical bond
- 4. horizontal rows of elements arranged in order of increasing atomic number on the periodic table
- 5. one of the three main classifications of the periodic table
- 6. a gas or dull, brittle solids that are poor conductors of heat and electricity
- 8. an atom or bonded group of atoms that has a positive or negative charge