Development of PT

Agenda

• Review

• Notes on PT

What was the change?

electron

neutron

proton

3115P-3

• Atom or ion• p+

• e-

• no

• Lewis dot

• Bohr’s Model

Ions or Isotopes

11p+

11no

11p+

12no

Mendeleev Song

He was born in Russia in 1834. Hard work as a youth opened up the college doors. He always tried to be the best that he could be, and chose to make his mark in chemistry.

• Who told the elements where to go? Mendeleev!

• Who put them in columns and in rows? Mendeleev!

• Who was ready, who was able to make a periodic table? Who was that chemistry? Mendeleev!

• He wondered if nature really had a master plan; if the elements had a pattern that one could understand. So he bought a bunch of cards and on each one wrote the name of an element and its weight, and then he played the game!

• Who told the elements where to go? Mendeleev!

• Who put them in columns and in rows? Mendeleev!

• Who was ready, who was able to make a periodic table? Who was that chemistry? Mendeleev!

• He put them all in order by their atomic weight, used their chemical properties to differentiate. Groups began to form and despite some question marks, he managed to produce a simple periodic chart.

• Who told the elements where to go? Mendeleev!

• Who put them in columns and in rows? Mendeleev!

• Who was ready, who was able to make a periodic table? Who was that chemistry? Mendeleev!

• At first in 1869 the chart was not a hit, but that young Russian chemist was not the kind to quit! He revied atomic weights and staked his whole career, predicting that several new elements would appear. A few year passed and sure enough they came, Ga, Sc, Ge were their names. Chemists everywhere were impressed with that they saw, there really must be something to this periodic law.

• Who told the elements where to go? Mendeleev!

• Who put them in columns and in rows? Mendeleev!

• Who was ready, who was able to make a periodic table? Who was that chemistry? Mendeleev!

• So they call him the father of the periodic table, and his work gave rise to another kind of label. It’s the name for element number 101, in honor of this man they call it Mendelevium!

Mendeleev

• Mendeleev also noticed the periodic pattern of element properties when arranged by atomic mass.

• He was also able to predict the properties of elements that had not yet been discovered: Sc, Ga & Ge.

• Some elements were not in the right spot based on mass (Mendeleev said masses were incorrect, but he was wrong.)

Mosley

• Mosley arranged elements by atomic number. All elements fell into place with repeating properties.

• The periodic law: there is a periodic repetition of chemical and physical properties of the elements when arranged by increasing atomic number.

IA IIA IIIB IVB VB VIB VIIB

VIII

B

IB IIB IIIA IVA VA VIA VIIAVIII

A

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

1 2

3 4

The Periodic Table of the Elements5 6 7 8 9 10

11 12 13 14 15 16 17 18

19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54

55 56 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86

87 88 103 104 105 106 107 108 109 110 111 112

57 58 59 60 61 62 63 64 65 66 67 68 69 70

89 90 91 92 93 94 95 96 97 98 99 100 101 102

METALS

Metals

• lustrous – shiny

• Solids – except for Hg

• Conductors of heat & electricity

• Malleable (hammer to flat sheet)

• Ductile (draw into a wire)

IA IIA IIIB IVB VB VIB VIIB

VIII

B

IB IIB IIIA IVA VA VIA VIIAVIII

A

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

1 2

3 4

The Periodic Table of the Elements5 6 7 8 9 10

11 12 13 14 15 16 17 18

19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54

55 56 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86

87 88 103 104 105 106 107 108 109 110 111 112

57 58 59 60 61 62 63 64 65 66 67 68 69 70

89 90 91 92 93 94 95 96 97 98 99 100 101 102

NONMETALS

Nonmetals

• Generally gases

• Brittle

• Dull-looking solids

• Poor conductors of heat and electricity

IA IIA IIIB IVB VB VIB VIIB

VIII

B

IB IIB IIIA IVA VA VIAVIIA

VIIIA

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

1 2

3 4

The Periodic Table of the Elements5 6 7 8 9 10

11 12 13 14 15 16 17 18

19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54

55 56 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86

87 88 103 104 105 106 107 108 109 110 111 112

57 58 59 60 61 62 63 64 65 66 67 68 69 70

89 90 91 92 93 94 95 96 97 98 99 100 101 102

Metalloids

• Have properties of metals and nonmetals

Vocab

Groups or Families• The vertical columns

on the periodic table

Periods• The horizontal rows

on the periodic table• Hint: called PT and we

read left to right so periods go left to right!

Family Names

1. Alkali metals2. Alkaline earth3. Boron family4. Carbon family5. Nitrogen family6. Chalogens7. Halogen8. Noble Gas

IA IIA IIIB IVB VB VIB VIIB

VIII

B

IB IIB IIIA IVA VA VIAVIIA

VIIIA

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

1 2

3 4

The Periodic Table of the Elements5 6 7 8 9 10

11 12 13 14 15 16 17 18

19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54

55 56 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86

87 88 103 104 105 106 107 108 109 110 111 112

57 58 59 60 61 62 63 64 65 66 67 68 69 70

89 90 91 92 93 94 95 96 97 98 99 100 101 102

Transition Metals

IA IIA IIIB IVB VB VIB VIIB

VIII

B

IB IIB IIIA IVA VA VIAVIIA

VIIIA

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

1 2

3 4

The Periodic Table of the Elements5 6 7 8 9 10

11 12 13 14 15 16 17 18

19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54

55 56 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86

87 88 103 104 105 106 107 108 109 110 111 112

57 58 59 60 61 62 63 64 65 66 67 68 69 70

89 90 91 92 93 94 95 96 97 98 99 100 101 102

Inner Transition Metals

IA IIA IIIB IVB VB VIB VIIB

VIII

B

IB IIB IIIA IVA VA VIAVIIA

VIIIA

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

1 2

3 4

The Periodic Table of the Elements5 6 7 8 9 10

11 12 13 14 15 16 17 18

19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54

55 56 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86

87 88 103 104 105 106 107 108 109 110 111 112

57 58 59 60 61 62 63 64 65 66 67 68 69 70

89 90 91 92 93 94 95 96 97 98 99 100 101 102

Representative Elements = all group A elements