Structure 2.2.4 - VSEPR model

Question 1

What are electron domains responsible for

Answer 1

molecular geometry (shape)

Question 2

what does the electron domain include

Answer 2

the # of lone pairs of electrons, as well as any single or double or triple bonds

Question 3

What does VSEPR stand for

Answer 3

Valence shell electron pair repulsion model

Question 4

Types of electron domains

Answer 4

-lone pair of electrons (non-bonding domains) (except in the case of a coordination bond)
-bonding domain (single, double, or triple bond)

Question 5

What determines the molecular geometry

Answer 5

the total # of domains
-the geometry hence depends on the repulsion b/w domains

Question 6

non bonding vs bonding domains, which exert the greatest repulsive force and why

Answer 6

non bonding (lone pairs), due to charge density

Question 7

repulsive force in triple, double, single bonds and why

Answer 7

Triple> double > single for repulsive force, as electron density decreases

Question 8

angle of a bent geometry

Answer 8

104.5

Question 9

angle of trigonal pyramidal

Answer 9

107

Question 10

angle of a tetrahedral geometry

Answer 10

109.5

Question 11

angle of a trigonal planar

Answer 11

117

Question 12

molecule geometry vs E- domain geometry of a species w 3BD and 1 NBD

Answer 12

molecule geometry=trigonal pyramidal

E- domain geometry= tetrahedral

Question 13

molecule geometry vs E- domain geometry of a species w 2BD and 2 NBD

Answer 13

Molecule geometry=bent
E- domain= tetrahedral

Question 14

molecule geometry vs E- domain geometry of a species w 4BD and 0 NBD

Answer 14

molecule geom-tetrahedral
e domain- tetrahedral

Question 15

molecule geometry vs E- domain geometry of a species w 3BD and 0 NBD

Answer 15

molecule geom-trigonal planar
e- domain geom- trigonal planar

Question 16

molecule geometry vs E- domain geometry of a species w 2BD 0NBD

Answer 16

molecule geom-linear
e- domain geom-linear

Question 17

molecule geometry vs E- domain geometry of a species w 2BD and 1 NBD

Answer 17

Molecule Geom- V shaped
e- domain geom- trigonal planar