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Name: _________________________________________________ Period: _________
Periodic Table & Trends
Organization of the PT by electron configuration; properties of families of elements; periodic trends in ionic radius, atomic radius, electronegativity, and ionization energy
Fill this in as we go.Block In class topic and pages SWBAT Hmwk:
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If you are absent for any reason, check the calendar see what you missed
BEFORE you return to class: Bit.ly/bowiechemistry
Saplings due Wednesdays at 11:55 pm
max # e s = ___ p = ___ d = ___ f = ___
Electron Configuration
The Periodic Table:Groups: __________________________________________________
Periods:__________________________________________________
Representative Elements (A):____________________________________
Transition Elements (B):_______________________________________
Properties of Metals, Metalloids, and Nonmetals: Use this space to summarize what you learned in the investigation.Metals Metalloids Nonmetals
GLUE IN PERIODIC TABLE WITH METALS/NONMETALS/METALOIDS
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Draw the Lewis Dot Diagram for the following elements. Draw the LDS for the ions of the 2nd period below the line.
Ions
Atom
Use your Lewis Dot periodic table (Electrons packet) to answer the following questions.
Which do you think would have more similar chemical properties, rows or columns? Explain why you think this.
Would the name “family” be more appropriate for groups or periods? Explain why you think this
What do elements in Periods have in common?
Development of the Periodic Table Timeline: Sapling Notes500-300 B.C.Ancient Greek Philosophers
Fill in the original table of elements:
1700sAntoine Lavoisier Defined elements: Substances that cannot _____________________ or be physically
_________________________.
Established that air is not an element because it is a mixture of the elements __________
and _________.
Made a list of all the elements known at the time.
1800sDmitri Mendeleev Sorted Lavoisier’s list in order of increasing atomic _____________________.
Arrange these elements in the order that Mendeleev used: Cobalt, Iron, Nickel.
___________________________________________________________
Found that properties of the elements repeated in this list.
Wrapped the list into a _______________________________.
Name 2 elements that he said have similar properties:
__________________________ and _________________________
1913Henry Moseley When newly discovered elements were placed in Mendeleev’s table, the ______________
did not match. Moseley rearranged the table by ________________________ instead of
mass and the properties matched.
Arrange these elements in the order that Moseley used: Cobalt, Iron, Nickel.
___________________________________________________________
Summarize the contributions of each scientist to the Modern Periodic Table below:Mendeleev Moseley
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Properties with Periodic Trends: Sapling NotesWrite definitions in your own words, then complete any additional notes as indicated.Effective Nuclear Charge - the net ________________ charge experienced by an _____________ in an atom. Shielding is
caused by__________________________________________________________________
The ENC is also given by the ___________________________ since the _________ electrons
shield the _______________ in the nucleus.
Increases _________________ a period and ____________________ a group.
Label the energy levels containing shielding electrons on the Bohr model to the left.
Atomic radius – ____________________________________________________________________________________________
AR _________________ as you move ______________ a group because __________________________________________
_____________________________________________________________________________________________________
AR _______________ as you move _______________ a period because __________________________________________
_____________________________________________________________________________________________________
Why is it not the distance from the nucleus to the outside of the electron cloud?
Ion Radius is similar to atomic radius but for ions. Cations are ___________________ than the neutral atom and anions are
_____________________________ than their neutral atom because____________________________________________________
_____________________________________________________________________
Noble Gases do not have an Ionic Radius because:
Ionization Energy – Energy is needed to ___________________ an electron from an atom. Have to overcome
the pull from the _________________. Subsequent electrons require more energy to remove than the first
electron. Analogy: It’s like stealing ___________________ from ______________________ or
____________________; some are easier than others.
Increases _________________ a period and ____________________ a group.
Electronegativity – measure of the tendency of an atom to attract a bonding pair of electrons because ______________________
____________________________________________________________________________________________________________
Electronegativity Scale: Low = ______ Paulings High = ______ Paulings
Analogy: It’s like people playing ________________________________. Increases _________________ a period and ____________________ a group.
Label and explain what’s happening in the diagram on the right.
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Cumulative practice: Pick 4 elements (2 in A and 2 in B) and fill in the following information about each.
Element name, symbol, and atomic #
Metal, nonmetal, or
metalloid?Representative or
transition? Family or category name
s, p, d, or f, (with
energy level)
Valence electrons
An element with similar properties
Example: Dysprosium, Dy, 66 metal Transition
element Inner transition metal 4f10 6s2 Californium, Cf
***********************************************************************************************************************************Periodic Trends: Using the information provided, write a 7 word definition of each property. Draw a horizontal arrow pointing in the direction that property increases along a period. Draw a vertical arrow pointing in the direction that property increases among a family/group.Ionization Energy (7 word def) Electronegativity (7 word def) Atomic Radius (7 word def) Ionic Radius (7 word def)
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KEY
Hydrogen Transition Metals (w/ ox#) Noble Gases
Alkali Metals Post Transition Metals Other nonmetals
Alkali Earth Metals Metalloids # valence electrons
Transition Metals Halogens (nonmetals) OXIDATION #
The Periodic Table of the Elements Families & Groups