Definitions P Flashcards
Pi bond
A bond formed by the sideways overlap to p orbitals, containing two electrons and with electron density concentrated above and below any sigma bond(s) between the same atoms.
Partial dissociation
The splitting of some of a species in solution into aqueous ions
Percentage yield
Actual yield/Theoretical yield
Periodicity
A repeating trend in properties of the elements across each period of the periodic table
Permanent dipole
A small charge difference that doesn’t change across a bond, with positive and negative partial changes on the bonded atoms the results of the bonded atoms having different electronegativity
Permanent dipole dipole interactions
Attractive forces between the permanent dipoles in different molecules
Polar molecule
Molecule with an overall dipole, having taken into account any dipoles across bonds and the shape of the molecule
Polar covalent bond
A bond with a permanent dipole having positive and negative partialchanges on bonded atoms
Polymer
A large chain molecule formed from many repeating units of smaller molecules known as monomers
Position of equilibrium
The relative quantities of the reactants and products, indicating the extent of a reversible reaction at equilibrium
Principal quantum number
A number representing the relative overall energy of each orbital, which increases with distance from the nucleus.
Propagation
The steps that continue a free radical reaction, in which a radical reacts with a reactant molecules to form a new molecule and another radical, causing a chain reaction
