Definition of covalent bond
Attraction of a shared pair of electrons for the nuclei of the bonded atoms
What are the electrons in the outer shell not involved in bonding called?
Lone pairs
Definition of dative covalent bond
When both of the electrons in the covalent bond are provided by the same atom
Definition of electron pair repulsion
When the electron pairs in the outer shell of the central atom in a molecule repel each other and therefore arrange themselves to be as far away from each other as possible