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Atomic structure: elements 1 - 20 and beyond
 

Atomic structure: elements 1 - 20 and beyond

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    Atomic structure: elements 1 - 20 and beyond Atomic structure: elements 1 - 20 and beyond Presentation Transcript

    • Atomic Structure and electron configuration
      Elements 1 to 20 and beyond..
    • Hydrogen
      Electron configuration:
      1
      H
    • Helium
      Electron configuration:
      2
      He
    • Lithium
      2, 1
      Li
    • Beryllium
      2, 2
      Be
    • Boron
      2, 3
      B
    • Carbon
      2, 4
      C
    • Nitrogen
      2, 5
      N
    • Oxygen
      2, 6
      O
    • Fluorine
      2, 7
      O
    • Neon
      2, 8
      O
    • Sodium
      2, 8, 1
      Na
    • Magnesium
      Mg
    • Aluminium
      Mg
    • Silicon
      Si
    • Phosphorus
      P
    • Sulfur
      S
    • Chlorine
      Cl
    • Argon
      Ar
    • Potassium
      2, 8, 8, 1
      K
    • Calcium
      Ca
    • Beyond calcium..
      Not in syllabus
      Electron shell filling follows different rules. Knowledge of electron configuration and drawing of atomic structure NOT required (and do NOT assume!)
    • Beyond calcium..
      All you need to know:
      For atoms of all elements in Group I to VII,
      number of outermost electrons = group number.
      All atoms of Group 0 elements have 8 outermost electrons, except helium atom, which has 2.
      Transition metals – not required to know.
    • If you die die must know, you can..
      wait 2 years for JC, OR
      see me immediately, OR
      go to ptable.com and enjoy the wealth of information there. 