Unit 4 Flashcards
Diatomic molecules:
2 atoms of the same element
Diatomic molecules include (7):
H, N, O, F, Cl, Br, I
In covalent bonds, the shared electrons are found in:
Outermost energy level (valence) of atom
Molecular shape is formed by:
Arrangement of electron pairs around central atom.
How many electrons are bonded to the central atom in a LINEAR configuration?
2
How many unshared pairs are in a LINEAR configuration?
0
How many atoms are bonded to the central atom in a BENT configuration?
2
How many unshared pairs are in a BENT configuration?
1
How many atoms are bonded to the central atom in a TRIGONAL PYRAMIDAL configuration?
3
How many unshared pairs are in a TRIGONAL PYRIMIDAL configuration?
1
How many atoms are bonded to the central atom in a BENT* configuration?
2
How many unshared pairs are bonded to the BENT* configuration?
2
How many atoms are bonded central atom in the TETRAHEDRAL configuration?
4
How many unshared pairs are int eh TETRAHEDRAL configuration?
0
Angle between bonds in waster molecule:
104.5
Angle between bonds with a tetrahedral molecular shape:
109.5 degrees
What is the difference between a dipole-dipole bond and a hydrogen bond? Which is stronger?
Hydrogen bonding is the strongest dipole bond, and is significantly stronger than the other dipole-dipole bonds.
Hydrogen bonding is:
When a hydrogen atom is directly bonded to another highly electronegative atom (N, O, F).
Polar classification:
> .4, non-symmetrical, unshared pairs around central atom
Non-polar classification:
≤.4, symmetrical, no unshared pairs around central atom
How many atoms are bonded to the central atom in a TRIGONAL PLANAR configuration?
3
How many unshared pairs are in the TRIGONAL PLANAR configuration?
0
