bonding and structure: definitions Flashcards
1
Q
covalent bond
A
a shared pair of electrons
2
Q
coordinate bond
dative covalent bond
A
when one atom provides both the electrons needed for a covalent bond
3
Q
(valence shell) electron pair repulsion theory
A
electron pairs repel one another. this repulsion causes the molecule to adapt a (3D) shape in order to minimise repulsion
4
Q
electronegativity
A
the ability of an atom to attract a pair of electrons in a covalent bond
5
Q
polar bond
A
a covalent bond in which there is an unequal share of the electrons due to the differing electronegativities of the involved atoms
6
Q
ionic bond
A
the strong electrostatic forces of attraction between oppositely-charged ions
7
Q
dipole
A
created when a bond has positive and negative sides/partial charges
