Atoms and The Periodic Table Vocabulary

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Across
  1. 3. Atoms of the same element that have different numbers of neutrons; different atomic mass
  2. 6. The 14 elements with atomic numbers from 58 to 71
  3. 8. energy The amount of energy required to remove an electron from an atom
  4. 10. electrons Electrons on the outermost energy level of an atom; involved in ion formation and chemical bonding
  5. 12. A positively charged ion; lost valence electrons
Down
  1. 1. A negatively charged ion; gained valence electrons
  2. 2. The 14 elements with atomic numbers from 90 to 103
  3. 4. elements Elements with atomic numbers greater than 92
  4. 5. configuration The arrangement of electrons in the orbitals of an atom
  5. 7. Trends Property of the elements that can be predicted from the arrangement of the periodic table
  6. 9. mass The average mass of all the isotopes of an element or the sum of protons and neutrons in an atom
  7. 11. level A region of an atom in which electrons of the same energy are likely to be found; represented by periods on periodic table
  8. 13. An atom or group of atoms that has a positive or negative charge because they lost or gained electrons