Arkansas State University Department of Chemistry and Physics

Study Guide - Exam 5

Molecular Geometry / Bonding

For  SO₃ and SO₃^2- ,  answer each of the following:

a) draw the Lewis Dot Structure

b) give the electron arrangement (E.A.)

c) give the molecular geometry (M.G.), (use VSEPR rules)

d) describe the bond angles

e) calculate the formal charge for each atom

f) bond polarity (covalent, polar covalent, ionic) (using electronegativity)

g) dipole moment, yes or no?

h) draw the resonant structures, if any

i) describe the bond distances and strengths

j) hybrid orbitals

k) draw orbital overlap

l)  describe the bonding, sigma or pi?

in addition to the questions above, students should be able to:

m) calculate enthalpy change from BDE

n) define and use VSEPR Rules

o) define electronegativity and know the trends

answers