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

Periodic Table color

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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

Periodic Trend War Battle Trend Card dealt Card dealt Card dealt Card dealt Winning Card

Warm-ups & Additional Notes

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