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Title: Periodic Table Notes
Description: Talks about what the groups and periods mean. Also, how the table is organized and who created it.
Description: Talks about what the groups and periods mean. Also, how the table is organized and who created it.
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Periodic Table: Notes
Origin of the periodic table
...
Mendeleev is known as Father of Modern Periodic
table
...
The elements are arranged in columns and rows in the periodic table
...
Groups/ Families are the Columns which go up and down
...
There are 18 groups in
the periodic table
...
Periods are the rows go across the periodic table
...
)
Periods represent the # of energy levels of an atom
...
Each cell in the periodic table gives information about an atom of the respective
element
...
So, rows
are “periods”
What is an atom's atomic number?
Atomic Number: number of protons in the nucleus of an atom
...
What is an atom's mass number?
Remember: Mass relate to heavy number in the periodic table
...
They are highly reactive
Physical properties:
Shiny 'metallic' appearance
Solids at room temperature (except mercury)
High melting points
High densities
Large atomic radii
Low ionization energies
Low electron negativity
Malleable-hammer to thin sheets
Ductile- make to wires
...
Group2 elements are metals which exhibit all the
properties of metals
...
The
interesting thing about transition metals is that their valence electrons, or the
electrons they use to combine with other elements, are present in more than one
shell
...
Group 17 Halogens: These five toxic, non-metallic elements make up Group 17 of
the periodic table and consist of: fluorine (F), chlorine (Cl), bromine (Br), iodine
(I), and astatine (At)
...
This
characteristic makes them more reactive than other non-metal groups
...
Group 13-16 are known with the name of the first element, like Boron group,
carbon group, Nitrogen group and Oxygen group
...
Atoms are made of three sub particles
...
Electrons are negatively charged particles
...
Electrons are always in motion and are located in an
electron cloud, which is the area surrounding the nucleus of the atom
...
Protons are positively charged particles
...
An easy way to remember proton both proton and positive start with the letter
"P
...
Title: Periodic Table Notes
Description: Talks about what the groups and periods mean. Also, how the table is organized and who created it.
Description: Talks about what the groups and periods mean. Also, how the table is organized and who created it.