2.2 Flashcards
Intramolecular forces
Bonds holding molecules together, not bonds holding molecules together
Strength of ionic bonds
Ionic bonds are very strong, requiring a lot of energy to melt or vaporize these solids. Very endothermic.
Endothermic
Input energy to break a bond (+)
Potential energy and distance
Potential energy of valence electrons decreases approaching the nucleus of another atom.
Bond energy and bond formation
Energy is released during the formation of a bond.
Conservation of energy
The amount of energy required to break the bond between two specific atoms is equal to the amount of energy released when a bond forms between the same two atoms.
Ideal bond length
Where potential energy is at its lowest point.
Bond energy and bond length
As the atomic radii of bonding atoms increases, bond length increases and bond energy decreases
Bond order, bond energy, and bond length
As the electron density between the positive nuclei increases, attractive forces between the protons and bonding electrons increase. Bond length decreases and bond energy increases (COVALENT)
