Chemistry- periodic table and periodicity
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Last updated 12:09 AM on 12/7/22
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41 Terms
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atomic mass
what property did Mendeleev arrange the elements
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atomic number
what property did Moseley suggest the periodic table be arranged?
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periodically
The periodic law are THE PROPERTIES OF THE ELEMENTS REPEAT ___________
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period
A HORIZONTAL ROW IN THE PERIODIC TABLE
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group
A VERTICAL COLUMN IN THE PERIODIC TABLE
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7
how many periods in the periodic table?
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18
how many groups in the periodic table?
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5
how many valence electrons in arsenic?
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gallium
what element is atomic number 31?
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Th
what is the chemical symbol for atomic number 90
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2
what is the period number for Beryllium(atomic number 4)
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14
what is the group number for Lead(Pb atomic number 82)
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D
what block are the transition elements in?
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block f
what type of orbitals are the actinide and lanthanide electrons found?
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valence electrons
strontium is more chemically similar to calcium because the same amount of __________ ________ .
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radon
what is the heaviest noble gas
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protons
to tell which element is heavier you compare the number of __________, which ever has more is more heavy
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alkali metals
what are group 1 elements called
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alkaline earth metals
what are the group 2 metals called
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halogens
what are the group 17 elements called
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noble gases
what are the group 18 elements called
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halogen
what is the name of the valence shell electron configuration s^2 p^5
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valence
all members of a group have the same amount of _____ electrons
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atomic radius
distance from the center of the nucleus to the outermost isolated electron.
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increases
what happens to the atomic radius as you go down the column?
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decreases
what happens to the atomic radius as the atomic number increases
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electron
neutral atoms convert into cations by losing an __________
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acquire
neutral atoms convert into anions by _________ an electron
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cation
metals usually form ________(type of ion)
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anions
non metals usually form ________
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ionization energy
THE ENERGY REQUIRED TO REMOVE AN ELECTRON FROM AN ATOM
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electrons
First, second, and third ionization energies are is the energy it takes to remove the first, second, and third __________
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increases
as you go left to right, ionization energy ______
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decreases
as you go down a group, ionization energy _______
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anion
when an atom becomes an ________, the radius becomes larger
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smaller
when an atom becomes a cation, its radius becomes _________s
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left
where are the metals located on the periodic table
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right
where are the non metals located
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electronegativity
THE TENDENCY FOR AN ATOM TO ATTRACT ELECTRONS TO ITSELF
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decreases
as you go down the table, electronegativity _______
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increases
as you go across, electronegativity ___________
