Chemistry ch 14

Home > Preview

The flashcards below were created by user AnnaIsCool on FreezingBlue Flashcards.


  1. ionic crystals are held together by
    the attraction of positive ions and negative ions
  2. what forces hold the atoms in molecules together?
    • intramolecular forces
    • (not electrically charged ions)
  3. polarity
    • Different EN's, so there isn't equal sharing of shared pairs
    • The highest EN attracts the shared pair more strongly and causes that end to have a partial negative charge.
    • The other end is partial pos, causiong a polar molecule
  4. In most cases, polar covalent bonds produce what kind of molecules?
    Polar molecules
  5. A polar molecule is often called a
    dipole/dipole moment
  6. u=
    Q x d
  7. What does a high dipole moment mean?
    the intramolecular forces in a molecule are strong, resulting in a higher MP and BP
  8. Can polar covalent bonds be present in a nonpolar molecule? Why?
    • Yes
    • The symmetry is key
  9. Weak forces
    intermolecular forces (between 2 molecules) and act to hold 2 or more molecules together
  10. van der Waals forces
    the attraction of an electron from 1 atom and the proton froma second atom
  11. dipole-dipole forces
    occur when 2 molecules that normally are dipoles attract
  12. dipole-induced dipole forces
    occur when a dipole attracts a nonpolar molecule by inducing this molecule to form a temporary dipole
  13. dispersion or London forces
    occur when 2 nonpolar molecu;es attract because of the random movement of their electrons
  14. molecules held by weak forces tend to be
    • gases
    • low BP liquids
  15. ligands are what kind of molecules/have what charges?
    • polar molecules- no charge
    • or negative ions
  16. complex ion
    when ligands cluster around the central positive ion
  17. coordination number
    number of points of attachment
  18. Most common coordination number
    • 6
    • octahedral
  19. coordination 4
    • square planar
    • Ni, Pd, Pt, CO
  20. coordination 2
    • always linear
    • formed with positive ions
    • Ag, Au, Hg
  21. didentate
    • ligand attaches to the central positive atom at 2 spots
    • oxalato
  22. molecular ligands are always
    • polar
    • have at least one unshared pair
    • ammonia
  23. which names change to latin?
    • Cu
    • Au
    • Ag
    • Fe
    • Pb
    • Sn
  24. coordination compound
    • form when complex ions are involved in the formation of a compound.
    • 3 ways
  25. 1st way to form coordination compound
    the charge of the positive ion is equal to the total charges of the ligands
  26. 2nd way to form a coordination compound
    neither the atom nor the ligands have a charge
  27. 3rd and most common way to form a coordination compound
    complex ions form a compound with 1 or more monoatomic, polyatomic, or complex ion of the opposite charge

Card Set Information

Author:
 AnnaIsCool
ID:
 68237
Filename:
 Chemistry ch 14
Updated:
2011-02-25 01:16:41
Tags:
chemistry
Folders:

Description:
polar molecules and molecular attraction
Show Answers:

What would you like to do?

Home > Flashcards > Print Preview