Lewis formula "water" - note value

11-07  Source: Network gathering  Views:3 

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Lewis formula "water" - note value

The Lewis formula for water succeed easily.

You should be aware of when creating the Lewis formula

  • Before the Lewis formula is applied to the molecule of water, the foundations of this special notation should be known. To this end, the correct handling of the periodic table of elements is necessary.
  • When drawing chemical molecules by the Lewis formula, the elements involved in the binding are first written next to each. The abbreviations for the elements can be looked up in the periodic table.
  • The periodic table of elements is also information on the number of outer electrons of an element. The number of these electrons may be 1 to 8
  • You can determine the number of valence electrons easily, by checking, there is the element in which group. The group number is the same time the number of these electrons.
  • Now you can draw the molecule. Draw the element symbols, the number of electrons as points.

The Lewis structure for water

To apply the Lewis formula for water, you should proceed according to the logic described above. However, there is the water molecule a special feature to be noted.

  1. First, you pick out the involved in the water molecule elements from the periodic table of elements. So the molecule once oxygen and two hydrogen atoms.
  2. Do not forget that the elements in the periodic table are abbreviated by element symbols. See hydrogen under H (= Hydrogenium) and oxygen O (= Oxygenium).
  3. Already while drawing the element symbols the particularity of water comes into play; because of its particular spatial structure of the molecule, the elements O and H must be drawn angled.
  4. Imagine this, a flat triangle before; located in the two lower corners are each a hydrogen atom, while oxygen forms the tip. The triangle may be imagined, not draw!
  5. Now look on the periodic table according to how many outer electrons provide the binding partner. The hydrogens each have an electron that you pose next to the item in the direction of the oxygen atom as a point.
  6. Oxygen provides a total of 6 outer electrons that you so spread around the element symbol around that the hydrogens toward each one point and on the two remaining sides, two points are plotted.
  7. Remember: The points may not be connected!

The water molecule is completed.

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