Periodic Table Trends I Periods & Families Guided Notes
What is the Periodic Table?
The periodic table of elements is a…
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A __________________ of all the known elements.
Is in order of ________________ atomic number and mass.
The table puts elements into groups with __________________
characteristics.
Allows us to recognize ______________________ over the whole
array of elements.
What are the three broad classes of elements?
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Metals, _______________________, metalloids
Across a period, the properties of elements become less
_____________________ and more nonmetallic.
Families of the Periodic Table
Periods: The horizontal rows are called a _______________.
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Elements in a period have the same # of e- ____________.
Groups: The vertical column is called a group/family.
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Elements in a group have the same #of ______________ e-.
Alkali Metals: Group#: _______, silver-colored, _____________
solids (Fr & Cs become liquids at a very low melting), reacts with
Halogens, reacts violently with water & air, _______ valence e-,
forms _____ cations.
Alkaline Earth Metals: Group#: _______, silvery colored,
_____________ solids, reacts with Group 6A, reacts with water &
air, _______ valence e-, forms _____ cations.
Valence electrons are the e- in the ________________ most shell.
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The number of valence e- _________________ the group
placement of an element on the periodic table and the atom’s
chemical reactivity.
Atoms will either lose, gain, or share electrons to obtain
happiness. This is called the ______________ ___________ (8e-)
Transition Metals: Group #’s: ______________, silvery-blue @ rm.
temp. (except Cu & Au) lustrous, solids @ rm. temp. except Hg,
malleable, good ____________________ of electricity, form colored
compounds, good __________________.
Lanthanides: Group #’s: _______________, silvery-white metals,
tarnish readily in air, _____________ solids, very reactive, many are
earth compounds ___________________ strongly under UV lights.
Actinides: Group #’s: _______________, all are
________________________, metal tarnish readily in air, very
______________ dense, combine with most _________________.
Other Nonmetals – Diatomic 7: Group #’s: _______________,
nonmetal elements that form a _______________ bond between
two atoms, always travel in _______________:
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Halogens: Group#: _______, all 3 states of matter are represented:
F & Cl are gases, Br is a liquid, I & ___________ are solids, highly
reactive, F most reactive element in existence, forms _____ anions,
forms diatomic molecules (F2, Cl2, Br2, I2), form ______________.
Noble Gases or Inert Gases: Group#: _______, odorless, colorless,
monatomic gases, stable or _________________, 8 valence e-.
What Do You Think?
Explain why the members of Group 1 react by losing an electron,
while the members of Group 17 react by gaining an electron.
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