Transcript Valence Electrons and Lewis Dot Structures

Valence Electrons and
Lewis Dot Structures
Valence Electrons
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Electrons in the atom’s outermost orbitals
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Usually the orbitals with the highest energy level
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Look at Sulfur, it has 16 total electrons but only 6
are valence
 S:
1s22s22p63s23p4
 S:
[Ne] 3s23p4
Lewis Dot Structures/ Electron Dot
Structures
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Consists of the element symbol, surrounded by
dots
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The symbol represents the nucleus and the inner
electrons

The dots represent the valence electrons
Building an electron dot structure
Practice – draw electron dot structures
after doing the noble gas notation
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Arsenic
Cesium
Lead
Calcium
Aluminum
Iodine
Oxygen
Xenon
Answer the following in complete
sentences
1.
What patterns do you see? Explain.
2.
Why does lead only have 4 valence electrons,
when it has 28 electrons after the noble gas?
Explain.
3.
What does the elements symbol represent in the
electron dot structure?