Chemical Bond Flashcards
What is electronegativity? (2)
• The ability of an atom in a molecule to attract electrons to itself.
• On the periodic table, electronegativity increases as you go…
– …from left to right across a row.
– …from the bottom to the top of a column.
The most stable (most likely) structure has: (2)
- the lowest formal charge on each atom
* the most negative formal charge on the most electronegative atom.
There are three classes of exceptions to the octet rule:
- molecules with an odd number of electrons,
- molecules in which one atom has less than an octet, and
- molecules in which one atom has more than an octet.
- In predicting molecular shape, a molecule adopts the 3D-dimensional geometry that minimizes the ______ between the valence electrons.
- The arrangement that minimizes repulsions depends on the number of electron _____.
repulsion
domains
How is the shape of a molecule determined?
• The shape of a molecule is determined by its bond angles i.e. the angles made by the lines joining the nuclei of the atoms in a molecule.
How is the shape and size of a molecule determined?
• The bond angles and bond lengths accurately define the shape and size of a molecule.
Name the electron domain geometry & bond angles of a structure with 2 electron domains:
Name the electron domain geometry & bond angles of a structure with 3 electron domains:
Name the electron domain geometry & bond angles of a structure with 4 electron domains:
Name the electron domain geometry & bond angles of a structure with 5 electron domains:
Name the electron domain geometry & bond angles of a structure with 6 electron domains:
Name the molecular of a structure with 2 electron domains:
Name the molecular of a structure with 3 electron domains:
Name the molecular of a structure with 4 electron domains:
Name the molecular of a structure with 5 electron domains: