Electrons, Bonding and Structure Flashcards
What is the shape and bond angle of a molecule with 4BP + 0LP?
Tetrahedral shape with 109.5 degree bond angle.
What is the shape and bond angle of a molecule with 3BP + 1LP?
Pyramidal shape and 107 degree bond angle.
What is the shape and bond angle of a molecule with 2BP + 2LP?
Non-linear shape and 104.5 degrees bond angle.
What is the shape and bond angle of a molecule with 3BP + 0LP?
Trigonal planar shape and 120 degrees bond angle.
What is the shape and bond angle of a molecule with 5BP + 0LP?
Trigonal Bipyramidal shape with 120 and 90 degree bond angle.
What is the shape and bond angle of a molecule with 6BP +0LP?
Octahedral shape with 90 degree bond angle.
What is the shape and bond angle of a molecule with 2BP + 0LP?
Non-linear shape and 180 degree bond angle.
Define electronegativity.
A measure of the attraction of a bonded atom to the pair of electrons in a covalent bond.
What element has the highest Pauling electronegativity value?
Fluorine.
What is a dipole? How to draw a dipole?
A dipole occurs in a covalent bond where one of the bonding atoms is delta positive and the other bonding atom is delta negative. When drawing a dipole, draw it from the positive to negative.
How do we know if a molecule is polar?
If the dipoles do not cancel out, the molecule is polar.
What are intermolecular forces?
Weak interactions between dipoles on different molecules.
Where can London forces form? How do they form?
London forces can form between any molecule, or atom with electrons. In molecules, there is a random arrangement of electrons as they are constantly moving. At one point, there will be an imbalance of electrons in the atom/ molecule, so a dipole is induced. Hence, this induces a dipole onto the next atom/ molecule.
What determines the strength of a London force?
The number of electrons in an atom or molecule.
