Across
- 2. Columns in the periodic table
- 3. Two or more electrons in the outer shell of an atom
- 6. Particles in the nucleus with a positive charge.
- 7. Number of particles in an element.
- 8. Rows in the periodic table
Down
- 1. Particles outside the nucleus, negative charge.
- 4. Core of an atom and has protons & neutrons.
- 5. Particles in the nucleus with a positive charge.
- 7. The smallest part of an element