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2. nn

  • nnnnnn
  • nnn
  • nnnnn

3. ALKANE

  • Unsaturated hydrocarbons
  • Ethene
  • Saturated hydrocarbon with single bonds. General formula: CnH2n+2. For example methane
  • Double bonds

4. ...........

  • ........
  • ...........
  • .......
  • ...........

5. ATOMIC NUMBER

  • The number of protons (which equals the number of electrons) in an atom. It is sometimes called the proton number
  • not equal to number of elctrons

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