Descriptive Inorganic Chemistry Chem 24112-1 M, W, F

Bill Vining232 Physical Sciences Building436-2698viningwj@oneonta.edu

Inorganic Chemistry

• One of the three descriptive chemistries:– Organic Chemistry– Biochemistry– Inorganic Chemistry

Theoretical and Practical Chemistries: Physical Chemistry Analytical Chemistry

Inorganic Chemistry: Chemistry for the rest of the elements.

First Assignment:

Find the best periodictable website. Bring URL and list of why youthink it is the best (andany drawbacks).

Hand in paper at startof class Friday.

Chem 241 Topics• Origin of the Elements• Nuclear Chemistry

– Stability– Practical Nuclear Chemistry

• Chemical Formation of the Earth and Ore• Obtaining the Elements: Extraction

– Methods for Metals and Nonmetals• Properties of the Main Group Elements

– The elements themselves– Oxides, halides of the elements

• Bonding and Properties of Metals

Chem 241 Topics• Chemistry in Water

– Charge Density– Enthalpy, Entropy and Solubility– Acid-Base Properties

• Atmospheric Chemistry– Global Warming– Acid Rain– Ozone

• Coordination Chemistry– Complex Types– Bonding– Symmetry in Chemistry– Spectroscopy

Official StuffCourse Website: http://employees.oneonta.edu/viningwj/chem241/

Text: Online pdf

http://employees.oneonta.edu/viningwj/chem241/text/

Grading:

Three exams 300 pointsHomework/In-Class Quizes 100 pointsPoster Session 50 points

Homework: OWL Starting Next Week

http://owl.oit.umass.eduChoose Chemistry General, UMass Amherst, then choose SUNY Oneonta, Chem 241Login: SUCO + your email up to the @ sign (mine would be SUCOviningwj)Password: your A00 number

First Topic

Where do all these elements come from?

How are they made?

Are they made?

Our Guide:

What aspects of this should we explain?

What will our explanations depend on?

Thermodynamics: relative stability

Kinetics: rate and mechanism

General Decrease in Abundance with Atomic Number

Even > Odd

Peak at Fe

Peak at Pb

Trough at Be

Missing Tc and Pm and Above N = 83

Nuclear equations

Nucleosynthesis of the Elements

Hydrogen Burning

1H + 1H 2H + e+ + ve

2H + 1H 3He +

3He + 3He 4He +21H

Why does this happen only in stars?

41H 4He + 2e+ + 2ve

Helium Burning

4He +4He 8Be8Be + 4He 12C* 12C +

3 4He 12C +

Is this easier or harder than hydrogenburning?

Carbon Burning, etc.

12C + 4He 16O + 16O + 4He 20Ne + 20Ne + 4He 24Mg + 12C + 12C 24Mg + 12C + 12C 23Na + 1H12C + 12C 20Ne + 4He

Go back to initial Questions. Can weanswer any?

The -Process

20Ne + 16O + 4He

20Ne + 4He 24Mg +

2 20Ne 16O + 24Mg +

40Ca + 4He 44Ti* + 44Ti* + e- 44Sc* + v+

44Sc* 44Ca + + + v+

44Ca + 4He 48Ti +

Neutron Capture-Beta Decay

65 6629 29

66 6629 30

66 6730 30

67 6830 30

68 6930 30

69 6930 31

69 7031 31

70 7031 32

Cu n Cu

Cu Zn

Zn n Zn

Zn n Zn

Zn n Zn

Zn Ga

Ga n Ga

Ga Ge

B

B

B

r- vs. s-neutron capture

What nuclei exist?