Electron Domains and Molecular Geometry

what determines an electron domain

number of lone pairs and any bond (single, double, and triple all count as one domain)

name of a compound with 2 domains

linear

angle for a linear domain

180 degrees

name of a compound with 3 domains

trigonal planar

angle for a trigonal planar domain

120 degrees

name of a compound with 4 domains

tetrahedral

angle for a tetrahedral domain

109.5 degrees

name of a compound with 6 domains

octahedral

angle for an octahedral domain

90 degrees

what determines molecular geometry in a compound

number of bonds only (single, double, and triple bonds all count as one)

name of a compound with 2 sets of bonds

bent

name of a compound with 3 sets of bonds

trigonal pyramidal

name of a compound with 4 sets of bonds

square planar

if a compound only has bonds and no lone pairs…

…the electron domain is the same as the molecular geometry

are angles between double/triple bonds and lone pairs greater than or less than the angle associated with the domain given

greater than