Across
- 3. Chlorine, fluorine and iodine.
- 4. A particle in which the number of electrons and protons are not balanced.
- 6. A negative particle.
- 9. An atom with an atomic mass of 23 amu.
- 11. Electrons located in the outermost shell of energy.
- 13. Another word meaning the concentration in moles per liter.
- 15. The unit of matter used in experimental chemistry.
- 16. A range of element sharing a same number of electron shells.
- 17. He discovered the energy levels for the electrons.
Down
- 1. He discovered the nucleus of the atom.
- 2. A particle that participates to the mass of the atom and the unique characteristic of it.
- 5. The referential code used to name the shells of energy.
- 7. A positively charge element.
- 8. A particle that participates to the mass of the atom but can vary in some species.
- 10. They are the same element but vary by their respective mass.
- 12. The name that refers to the number of particles in one mole.
- 14. A set of elements that share similar properties.