THE PERIODIC TABLE

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Across
  1. 2. The elements that belong to group 16 of the modern periodic table
  2. 6. Sequences of elements in periodic table with increasing number of electron shells
  3. 8. A Russian chemist and is considered the "father" of the periodic table
  4. 9. A molecule or ion that can react both as an acid and as a base
  5. 10. The process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons, often in conjunction with other chemical changes
Down
  1. 1. Elements in group 3 to 12 in periodic table
  2. 3. Chemical property that describes the tendency of an atom or a functional group to attract electrons toward itself
  3. 4. Nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table
  4. 5. Trend of atomic size across a period in perodic table
  5. 7. Sequences of elements in periodic table in order of increasing atomic number