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Question

Write the electronic configuration of all elements till Z=50 which have one electron in their valence shell.Specify the name, symbol and atomic number of these elements.


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Solution

Elements till Z=50 which have one electron in their valence shell.Specify the name, symbol and atomic number are as follows.

  • Hydrogen, symbol:H atomic number=1 electronic configuration:1
  • Lithium, symbol:Li atomic number=3 electronic configuration:2, 1
  • Sodium, symbol:Na atomic number=11 electronic configuration:2, 8, 1.
  • Potassium, symbol:K atomic number=19 electronic configuration:2, 8, 8, 1.
  • Rubidium, symbol:Rb atomic number=37 electronic configuration:2, 8, 8, 18, 1.

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