Download 16.1 to Lewis dot

Chapter Sixteen: Compounds
16.1 Chemical Bonds
16.2 Chemical Formulas
16.3 Molecules
CHEMICAL BONDING
Occurs when 2 or more atoms combine
 Can be from the same element (O2) or
different elements (NaCl)
 Atoms combine so that they each have
a total of 8 valence electrons (full
octet)
16.1 Valence electrons
Chemical bonds are formed only between the
electrons in the highest unfilled energy level.
These electrons are called valence electrons.
16.1 Valence electrons and the
periodic table
Going from left to right across a period
each new element has one more valence
electron than the one before it (A group).
How many valence electrons does nitrogen have?
16.1 Lewis dot diagrams
A clever way to keep
track of valence
electrons is to draw
Lewis dot diagrams.
A dot diagram shows
the element symbol
surrounded by one to
eight dots
representing the
What is the dot
valence electrons.
structure for nitrogen?