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.

Answer 1

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.