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Writing Electron configurations the easy way

Writing Electron configurations the easy way. Yes there is a shorthand. Electron Configurations repeat. The shape of the periodic table is a representation of this repetition. When we get to the end of the column the outermost energy level is full. This is the basis for our shorthand.

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Writing Electron configurations the easy way

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  1. Writing Electron configurations the easy way Yes there is a shorthand

  2. Electron Configurations repeat • The shape of the periodic table is a representation of this repetition. • When we get to the end of the column the outermost energy level is full. • This is the basis for our shorthand.

  3. The Shorthand • Write the symbol of the noble gas before the element. • Then the rest of the electrons. • Aluminum - full configuration. • 1s22s22p63s23p1 • Ne is 1s22s22p6 • so Al is [Ne] 3s23p1

  4. More examples • Ge = 1s22s22p63s23p64s23d104p2 • Ge = [Ar] 4s23d104p2 • Hf=1s22s22p63s23p64s23d104p65s2 4d105p66s24f145d2 • Hf=[Xe]6s24f145d2

  5. The Shorthand Again Sn- 50 electrons The noble gas before it is Kr Takes care of 36 Next 5s2 Then 4d10 Finally 5p2 [ Kr ] 5s2 4d10 5p2

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