Valence Bond Theory Flashcards
What is the valence bond theory?
electrons in a molecule occupy atomic orbitals rather than molecular orbitals
What is hybridization?
the process of combining two atomic orbitals to create a new type of hybridized orbitals
more stable molecule
What are hybrid atoms?
the central atom of molecule will form new and differently shaped orbitals
Where do sigma bonds overlap?
overlaps along the bond axis
What kind of bonds are sigma bonda?
single bonds
What are hybrid orbitals?
a model of bonding used to explain the placement of atoms in a molecule
What are double bonds also called in terms of sigma bonds?
pi bonds
What does a pi bond come from?
the overlap of unhybridized p orbitals
Where do pi bonds overlap?
off axis
What are pi bonds?
unhybridized p orbital and p orbital side by side
What is the order of kind of bond in a double bond?
first bond is a sigma bond
second bond is a pi bond
How many orbitals in an sp orbital? What is the electron geometry?
2 hybridized orbitals resulting from hybridization of 1 s and 1 p orbital
sp=s1p1, 2 total hybridized orbitals
linear geometry
How many orbitals in an sp2 orbital? What is the electron geometry?
3 hybridized orbitals resulting from the hybridization of 1s and 2 p orbitals
sp2=s1p2, 3 total hybridized orbitals
trigonal planar geometry
How many orbitals in an sp3 orbital? What is the electron geometry?
4 hybridized orbitals resulting from the hybridization of 1 s and 3 p orbitals
sp3=s1p3, 4 total hybridized orbitals
tetrahedral geometry
Lone pairs affect hybridization in the same way as…?
bonded pairs
