Nugent 1

11/2009

Organizing the elements

Objective:  How are the elements organized?

• Menedeleev:  Mass

• Now: ATOMIC NUMBER (PROTO

NS)

Nugent 2

11/2009

Mendeleev developed the first periodic table of the elements.

An element's properties can be predicted from its location in the table.

Properties:• Reactivity• Period• Group• Valence electrons• Ionization Energy• Electronegativity• Mass Number• Atomic Number• Atomic Radius• Metal/NM/Metaloid

 

Nugent 3

11/2009

The modern periodic tableElements are arranged according to atomic number

Periods = horizontal rows of elements

Group (family) = vertical column of elements with similar properties

Zig zag line = separates metals from nonmetals

Br

Ca

Fe

H

C

Cl

Mg

PZn

Nugent 4

11/2009

58 59 60 61 62 6463 65 67 68 69 70 71Ce Pr Nd Pm Sm Eu Gd Tb Ho Er Tm Yb Lu

66Dy

CeriumPraseodymiumNeodymiumPromethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium

90 91 92 93 94 9695 97 99 100 101 102 103Th Pa U Np Pu Am Cm Bk Es Fm Md No Lr98Cf

Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium CaliforniumEinsteinium Fermium MendeleviumNobelium Lawrencium

Ru

Ti

Rhenium

Ruthenium Rhodium

H

Li Be

Na Mg

K Ca

Rb Sr

Cs Ba

Fr Ra

Sc

Y

La

Ac

Zr

Hf

Rf

V

Nb

Ta

Db

Cr

Mo

W

Sg

Mn

Tc

Re

Bh

Fe

Os

Hs

Co

Rh

Ir

Mt

Ni

Pd

Pt

Cu

Ag

Au

Zn

Cd

Hg

Hydrogen

Lithium

Sodium

Potassium

Rubidium

Cesium

Beryllium

Magnesium

Calcium

Strontium

Barium

Radium

Scandium

Yttrium

Lanthanum

Actinium

Vanadium

Niobium

Tantalum

Dubnium

Chromium

Molybdenum

Tungsten

Manganese

Technetium

Iron Cobalt Copper Zinc

Palladium Silver Cadmium

Iridium Platinum Gold Mercury

Hassium Meitnerium

B

Al

Ga

In

Tl

C

Si

Ge

Sn

Pb

N

P

As

Sb

Bi

O F

Cl

Br

I

At

He

Ne

Ar

Kr

Xe

Rn

S

Se

Te

Po

Francium

Titanium

Rutherfordium

Zirconium

Hafnium

Seaborgium

Osmium

Bohrium

1

3 4

11 12

Nickel

19 20

37 38

55 56

87 88

21 22 23 24 25 26 27 28 29 30

39 40 41 42 43 44 45 46 47 48 49

57 72 73 74 75 76 77 78 79 80

89 104 105 106 107 108 109

5 6 7 8 9 10

13 14 15 16 17 18

31 32 33 34 35 36

50 51 52 53 54

81 82 83 84 85 86

2

Gallium Germanium Arsenic Selenium Bromine Krypton

Indium Tin Antimony Tellurium Iodine Xenon

ArgonChlorineSulfurPhosphorusSiliconAluminium

Boron Carbon Nitrogen Oxygen Fluorine Neon

Helium

Thallium Lead Bismuth Polonium Astatine Radon

http://www.ptable.com/ http://www.touchspin.com/chem/DisplayTable.html

Nugent 5

11/2009

Why the periodic table works?

It works because it's based on the structure of the atoms, especially the valence electrons.

All the elements in a family all have the same number of valence electrons.http://www.echalk.co.uk/Science/chemistry/periodicTableGame/periodicTable.html

Nugent 6

11/2009

Stable Octet:Eight is Great!

http://dl.clackamas.edu/ch104­07/gaining.htm

Nugent 7

11/2009

58 59 60 61 62 6463 65 67 68 69 70 71Ce Pr Nd Pm Sm Eu Gd Tb Ho Er Tm Yb Lu

66Dy

Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium

90 91 92 93 94 9695 97 99 100 101 102 103Th Pa U Np Pu Am Cm Bk Es Fm Md No Lr

98Cf

Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium

Ru

Ti

Rhenium

Ruthenium Rhodium

H

Li Be

Na Mg

K Ca

Rb Sr

Cs Ba

Fr Ra

Sc

Y

La

Ac

Zr

Hf

Rf

V

Nb

Ta

Db

Cr

Mo

W

Sg

Mn

Tc

Re

Bh

Fe

Os

Hs

Co

Rh

Ir

Mt

Ni

Pd

Pt

Cu

Ag

Au

Zn

Cd

Hg

Hydrogen

Lithium

Sodium

Potassium

Rubidium

Cesium

Beryllium

Magnesium

Calcium

Strontium

Barium

Radium

Scandium

Yttrium

Lanthanum

Actinium

Vanadium

Niobium

Tantalum

Dubnium

Chromium

Molybdenum

Tungsten

Manganese

Technetium

Iron Cobalt Copper Zinc

Palladium Silver Cadmium

Iridium Platinum Gold Mercury

Hassium Meitnerium

B

Al

Ga

In

Tl

C

Si

Ge

Sn

Pb

N

P

As

Sb

Bi

O F

Cl

Br

I

At

He

Ne

Ar

Kr

Xe

Rn

S

Se

Te

Po

Francium

Titanium

Rutherfordium

Zirconium

Hafnium

Seaborgium

Osmium

Bohrium

1

3 4

11 12

Nickel

19 20

37 38

55 56

87 88

21 22 23 24 25 26 27 28 29 30

39 40 41 42 43 44 45 46 47 48 49

57 72 73 74 75 76 77 78 79 80

89 104 105 106 107 108 109

5 6 7 8 9 10

13 14 15 16 17 18

31 32 33 34 35 36

50 51 52 53 54

81 82 83 84 85 86

2

Gallium Germanium Arsenic Selenium Bromine Krypton

Indium Tin Antimony Tellurium Iodine Xenon

ArgonChlorineSulfurPhosphorusSiliconAluminium

Boron Carbon Nitrogen Oxygen Fluorine Neon

Helium

Thallium Lead Bismuth Polonium Astatine Radon

Nugent 8

11/2009

Trends:Electronegativity

http://college.cengage.com/chemistry/intro/zumdahl/intro_chemistry/5e/students/protected/periodictables/pt/pt/pt_e2.html

Highest

Lowest

Across a period

Down a group

Nugent 9

11/2009

Trends: Ionization EnergyHighest

Lowest

Across a period

Down a group

Nugent 10

11/2009

Highest

Lowest

Across a period

Down a group

Atomic Radius

Nugent 11

11/2009

Atomic Radius:  Down a Group

Increases

Nugent 12

11/2009

58 59 60 61 62 6463 65 67 68 69 70 71Ce Pr Nd Pm Sm Eu Gd Tb Ho Er Tm Yb Lu

66Dy

Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium

90 91 92 93 94 9695 97 99 100 101 102 103Th Pa U Np Pu Am Cm Bk Es Fm Md No Lr

98Cf

Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium

Ru

Ti

Rhenium

Ruthenium Rhodium

H

Li Be

Na Mg

K Ca

Rb Sr

Cs Ba

Fr Ra

Sc

Y

La

Ac

Zr

Hf

Rf

V

Nb

Ta

Db

Cr

Mo

W

Sg

Mn

Tc

Re

Bh

Fe

Os

Hs

Co

Rh

Ir

Mt

Ni

Pd

Pt

Cu

Ag

Au

Zn

Cd

Hg

Hydrogen

Lithium

Sodium

Potassium

Rubidium

Cesium

Beryllium

Magnesium

Calcium

Strontium

Barium

Radium

Scandium

Yttrium

Lanthanum

Actinium

Vanadium

Niobium

Tantalum

Dubnium

Chromium

Molybdenum

Tungsten

Manganese

Technetium

Iron Cobalt Copper Zinc

Palladium Silver Cadmium

Iridium Platinum Gold Mercury

Hassium Meitnerium

B

Al

Ga

In

Tl

C

Si

Ge

Sn

Pb

N

P

As

Sb

Bi

O F

Cl

Br

I

At

He

Ne

Ar

Kr

Xe

Rn

S

Se

Te

Po

Francium

Titanium

Rutherfordium

Zirconium

Hafnium

Seaborgium

Osmium

Bohrium

1

3 4

11 12

Nickel

19 20

37 38

55 56

87 88

21 22 23 24 25 26 27 28 29 30

39 40 41 42 43 44 45 46 47 48 49

57 72 73 74 75 76 77 78 79 80

89 104 105 106 107 108 109

5 6 7 8 9 10

13 14 15 16 17 18

31 32 33 34 35 36

50 51 52 53 54

81 82 83 84 85 86

2

Gallium Germanium Arsenic Selenium Bromine Krypton

Indium Tin Antimony Tellurium Iodine Xenon

ArgonChlorineSulfurPhosphorusSiliconAluminium

Boron Carbon Nitrogen Oxygen Fluorine Neon

Helium

Thallium Lead Bismuth Polonium Astatine Radon

Reactivity:  Ability to Gain or Lose an Electron