Across
- 2. A particle of electromagnetic radiation has no mass and carries a quantum of energy.
- 3. A unit of mass that describes the mass of an atom or molecule
- 6. A horizontal row of elements in the periodic table
- 7. A subatomic particle with a negative charge
- 8. only certain values that are allowed
- 9. A subatomic particle that has a positive charge and is found in the nucleus
- 11. is the lowest energy state of a quantized system (100)
- 13. a state in which an atom has more energy than it does at its ground state
- 16. The energy needed to remove an electron from a negative ion to form a neutral atom or molecule
- 17. a positively charged ion
- 18. each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei
- 20. each of the actual or potential patterns of electron density that may be formed in an atom or molecule by one or more electrons and that can be represented as a wave function
- 21. one-half the distance between the nuclei of two atoms of the same element when the atoms are joined
Down
- 1. The amount of energy required to remove an electron from an atom
- 4. The reduction of the attractive force between a nucleus and its outer electrons due to the blocking effect of inner electrons
- 5. Measures the tendency of an atom to attract a shared pair of electrons
- 6. likelihood that a particular event will happen
- 10. area around the nucleus of an atom where the atom's electrons are most likely to be found
- 12. A particle in the nucleus with no electrical charge
- 14. An atom or group of atoms that has a positive or negative charge
- 15. a negatively charged ion
- 19. Vertical column in the periodic table