Noble Gas Notation

1
Noble Gas Notation

• A shorthand method of writing electron
  configuration

2
Noble Gases

• ? group 18 elements
• Noble gas configuration?the outer main energy
  level is fully occupied by 8 electrons

3
Steps to Write a Noble Gas Notation

• write down the symbol of the preceding noble gas
  (last column)
• Draw brackets around the noble gas symbol like
  this Ne
• write the electron configuration starting from
  there

4
Practice

• Write the noble gas notation for Ca
• The preceding noble gas is Ar
• Use the periodic table to find the next principal
  quantum number
• Ar 4s2

5
Additional Practice

• Write the noble gas notation for Zr
• The preceding noble gas is Kr
• Kr 5s2 4d2
• Write the noble gas notation for Ni
• The preceding noble gas is Ar
• Ar 4s2 3d8