Noble Gas Notation Noble Gas or Shorthand Configurations
Noble Gas Notation
Noble Gas (or Shorthand) Configurations Example: Na (11 e-) 1 s 22 p 63 s 1 Core electrons (do not participate in the “chemistry of the element)
Noble Gas (or Shorthand) Configurations Example: Na (11 e-) 1 s 22 p 63 s 1 Valence electron Core electrons (do not participate in the “chemistry of the element)
Noble Gas (or Shorthand) Configurations Example: Na (11 e-) 1 s 22 p 63 s 1 Shorthand: Use previous Noble Gas to represent core electrons
Noble Gas (or Shorthand) Configurations Example: Na (11 e-) 1 s 22 p 63 s 1 Shorthand: Use previous Noble Gas to represent core electrons [Ne] 3 s 1
Steps for Writing Noble Gas Electron Configuration 1. Determine the Noble Gas that is one row up from the element. 2. Put the symbol for the Noble Gas in brackets. 3. Continue writing the electron configuration using the periodic table from the Noble Gas.
Noble Gas (or Shorthand) Configurations Another Example: P (15 e-)
Brain Break: Textbook Twist § Line up in 2 lines facing the opposite direction of the person next to you. § Twist to pass the textbook down the line § Whichever line gets the textbook down and back the fastest wins!
Noble Gas (or Shorthand) Configurations Another Example: Ca (20 e-)
Noble Gas (or Shorthand) Configurations You Try: Br (35 e-)
To Review Electron Configurations A Way to Track the Electrons in an Atom
To Review Electron Configurations A Way to Track the Electrons in an Atom Remember: 1 s 22 p 63 s 23 p 64 s 23 d 7
Consider This Configuration… 1 s 22 p 63 s 23 p 64 s 23 d 104 p 4
Consider This Configuration… 1 s 22 p 63 s 23 p 64 s 23 d 104 p 4 Can we determine which element this configuration describes?
Consider This Configuration… 1 s 22 p 63 s 23 p 64 s 23 d 104 p 4 Look at very end of configuration
Identify these elements 1. 1 s 22 p 4 2. 1 s 22 p 63 s 23 p 1 3. 1 s 22 p 63 s 23 p 64 s 23 d 2
Time to Practice
- Slides: 18