Lecture 16: Molecular Shapes

Question 1

polar molecule is a

Answer 1

molecule with a net dipole moment (asymmetric distribution of charge)

Question 2

identifying features of a polar molecule

Answer 2

-has at least 1 polar bond & dipoles don’t cancel
-lone pairs &/or polar bonds distributed asymmetrically (don’t cancel)

Question 3

Steric Number (SN)

Answer 3

of things around a central atom (count pairs of e, or atoms)

Question 4

SN=2, Position=?

Answer 4

linear

Question 5

SN=2, Angle=?

Answer 5

180

Question 6

SN=3, Position=?

Answer 6

trigonal planar

Question 7

SN=3, Angle=?

Answer 7

120

Question 8

SN=4, Position=?

Answer 8

tetrahedral

Question 9

SN=4, Angle=?

Answer 9

109.5

Question 10

SN=5, Position=?

Answer 10

trigonal bipyramidal

Question 11

SN=5, Angle=?

Answer 11

90 and 120

Question 12

SN=6, Position=?

Answer 12

octahedral

Question 13

SN=6, Angle=?

Answer 13

90