26
Fe
13
Al
Topics 5. 6, 5.7
The Periodic Table of Elements
47
Ag
MB Clara Marcelín
54
Xe
92
What is it??
The PTE is an array from all the known chemical elements, classified and ordered depending on physical and chemical properties.
TIMELINE The periodic table of elements took many years and the work of many scientists to become what it is today. It continues to be a work in progress.
1863
1944
1829
1869
1913
Seaborg (Added the Lanthanide and Actinide series)
Dobereiner (Triads)
Newlands (Octaves)
Mendeleev (1st table with many gaps for undiscovered elements)
Moseley (Table ordered by the X-ray pattern of each element)
Ordered by Z (atomic number) Column = Family = Group Row = Period = Level
*IUPAC
The PTE
18
1. Alkali metals
2. Alkali earth metals
3. Transition metals
4. Non metals
5. Noble gases
*Lathanides series
*Actinides series
13
14
15
16
17
10
11
12
The PTE
18
13
14
15
16
17
10
11
12
Periodic trends
Atomic radius
Refers to the size of an element’s atom.
Distance between the nucleus and the farest electrons.
+ INCREASE -
+ INCREASE -
Metallic character
The property associated with elements that are metals.
It is the result of how easily metals lose their valence electrons.
+ INCREASE -
+ INCREASE -
Ionization energy
It is the energy required to remove an electron from a neutral atom.
- INCREASE +
- INCREASE +
Electronegativity
It is the tendency to attract electrons.
- INCREASE +
- INCREASE +
Have a great day!
5.6/5.7 PTE and trends
Cin Fdz
Created on September 3, 2020
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Transcript
26
Fe
13
Al
Topics 5. 6, 5.7
The Periodic Table of Elements
47
Ag
MB Clara Marcelín
54
Xe
92
What is it??
The PTE is an array from all the known chemical elements, classified and ordered depending on physical and chemical properties.
TIMELINE The periodic table of elements took many years and the work of many scientists to become what it is today. It continues to be a work in progress.
1863
1944
1829
1869
1913
Seaborg (Added the Lanthanide and Actinide series)
Dobereiner (Triads)
Newlands (Octaves)
Mendeleev (1st table with many gaps for undiscovered elements)
Moseley (Table ordered by the X-ray pattern of each element)
Ordered by Z (atomic number) Column = Family = Group Row = Period = Level
*IUPAC
The PTE
18
1. Alkali metals
2. Alkali earth metals
3. Transition metals
4. Non metals
5. Noble gases
*Lathanides series
*Actinides series
13
14
15
16
17
10
11
12
The PTE
18
13
14
15
16
17
10
11
12
Periodic trends
Atomic radius
Refers to the size of an element’s atom. Distance between the nucleus and the farest electrons.
+ INCREASE -
+ INCREASE -
Metallic character
The property associated with elements that are metals. It is the result of how easily metals lose their valence electrons.
+ INCREASE -
+ INCREASE -
Ionization energy
It is the energy required to remove an electron from a neutral atom.
- INCREASE +
- INCREASE +
Electronegativity
It is the tendency to attract electrons.
- INCREASE +
- INCREASE +
Have a great day!