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2. Electron shielding

  • s
  • s
  • The repulsion of electrons in different inner shells, shielding reduces the net attraction force from the positive nucleus on the outer shell electron.
  • s

3. Molecule

  • s
  • s
  • A small group of atoms held together by covalent bonds.
  • s

4. Atomic radius

  • s
  • s
  • The region in which an atom can hold two electrons with opposite spins.
  • s

5. Oxidation number

  • v
  • Measure of the number of electrons that an atoms used to bond with an atoms of another element, oxidation numbers are derived from a set of rules.
  • v
  • v

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