Bonding L10 Flashcards
1
Q
Valence Bond Theory
A
- Combines Lewis’ theory of filling octets by sharing pairs of electrons with the electron configuration of atomic orbitals
- Valence Bond theory states that bonding accuse when atomic orbital overlap
2
Q
Problem with Valence Bond Theory
A
- Problem= bond angle is wrong
- Solution= Hybrid orbitals
3
Q
single bonds
A
- able to spin on an axis
- sigma bonds
4
Q
double bonds
A
- pi bonds prevent sigma bonds from spinning on this axis
5
Q
cis isomers
A
- similar across top and across bottom
6
Q
trans isomers
A
similar diagonally
7
Q
sigma vs. pi bonds strength
A
Sigma bonds are stronger, as they have shorter bond lengths and greater bond energies
8
Q
Bond polarity
A
- shared electrons spend more time around the most electronegative element in the chemical bond
- This gives the more EN element a slightly negative charge and the less EN element a slightly positive charge
9
Q
dipole moment
A
when the dipoles don’t cancel out and the molecule is polar
10
Q
Diatomic molecules
A
- Two diatomic molecules that contain atoms from the same groups in the same proportions
- will have the same shape
- will both be either polar or non-polar
