Periodic Groups, Families, and Periods:
Label the following groups Groups on the following periodic table: Alkali metals, Alkaline earth metals,
Transition Metals, non-metals Halogens, Noble Gasses, Metalloids
What is the definition of a group?
In the space provided, predict which groups might share characteristics based on the group names and
placement on the periodic table.
Define key characteristics of each group:
Alkali Metals:
Alkaline Earth Metals:
Transition Metals:
Metalloids:
Halogens:
Noble Gasses:
These groups can be further generalized into metals, non-metals, and metalloids. Create a venn diagram
in the space below with all three groups
Categorize the following unknown elements based on their characteristics:
X: Exists as a gas at room temperature, Brittle as a solid, very reactive
Y: Solid at Room temperature, very malleable, High thermal/electrical conductivity
Z: Varying degrees of density and thermal/electrical conductivity, often used as semiconductors
Xx: Exists as a gas at room temperature, Extremely unreactive
Periods and families are another way we categorize elements. Define each term.
What other elements belong in the same period as Oxygen? The same Family?
Take a moment to try and predict why it is important that we group elements into periods and familes.
Were you correct? Why or why not?
Define Periodic Law:
Answer the following questions:
If Oxygen reacts strongly with with Magnesium, what other element might you expect to react strongly
with Magnesium based on their families?
If Potassium and Chlorine react strongly together, what other element might react strongly with
Chlorine?
If Argon does not react with Iron, what other elements might you expect to be unreactive with iron?
Perioidic Trends:
Define each term:
Atomic Radius:
Electronegativity
Shielding Effect:
Ionization Energy:
Based on these definitions, do you expect that these trends might be related in some way? Which
trends do you thing have strong relationships?
Based on your current understanding, predict which elements you think would have the the largest
atomic radius, the highest electronegativity, largest shielding effect, and highest Ionization Energy.
Atomic radius increases from right to left and ___________ to _____________ making
____________the largest element
Electronegativity increases from ____________ to ____________ and bottom to top making
___________ the most electronegative element.
Ionization energy increases from left to right and _________ to __________ making _____________ the
element with the highest ionizatio energy.
Shielding Effect is constant across a period but increases from __________ to ____________.
Use arrows to indicate each trend on this perioidic table: