Across
- 3. Elements in the same vertical column of the periodic table
- 6. The specific amount of energy an electron has.
- 7. is the basic particle from which all elements are made
Down
- 1. A small particle in the nucleus of the atom, with no electrical charge.
- 2. A negatively charged particle that is found outside the nucleus of an atom.
- 4. A horizontal row of elements in the periodic table
- 5. The positively charged particle that is part of an atom's nucleus.