Molecular Geometry Flashcards
CH4
Tetrahedral
109.5
H2O
Angular
104.5
Cl3Br
Trigonal planar
120
NH3
Trigonal pyramidal
107.3
intramolecular bond
the bond between atoms within molecules`
valency
the number of electrons gained, lost or shared to complete the outermost energy level
covalent bond
a bond that occurs between 2 atoms which share at least one pair of electrons
pure covalent bond
the electron pair is shared equally between the 2 atoms. It occurs between 2 atoms of the same element bond with each other
also known as a non-polar covalent bond
there is a symmetrical distribution of charge
electronegativity
is a measure of the tendency of an atom to attract a bonding pair of electrons
polar covalent bond
the bonding electron pair is not shared equally between 2 atoms
occurs when the 2 atoms involved have different electronegativity
Also referred to as dipole molecule
ionic bond
the transfer of electrons and subsequent electrostatic attraction
Don’t conduct electricity when solid. Only when in a solution or molten
difference in electronegativities
∆EN = largest EN - smallest EN
metallic bond
being between a positive kernel and a sea of delocalised electrons
VSEPR
valence shell electron repulsion theory
Valence electrons
Electrons found in the outermost energy level
Group number
