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Group Summary Activity. Directions: Go to view- slide show. Click through slides. Clues will be revealed one at a time. See how many clues it takes before you know the group. Group Summary. Melting/boiling points increase down the column Chemical reactivity increases down a column

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group summary activity

Group Summary Activity

Directions: Go to view- slide show. Click through slides. Clues will be revealed one at a time. See how many clues it takes before you know the group.

Jodi Grack; Wayzata High School

group summary
Group Summary
  • Melting/boiling points increase down the column
  • Chemical reactivity increases down a column
  • The bottom elements have been known to form compounds, the top three have not.
  • ns2np6
  • All elements are stable, unreactive gases.

ANSWER:

Group #8 – Noble Gases

Jodi Grack; Wayzata High School

group summary1
Group Summary
  • Melting/boiling points decrease down the column
  • Highly reactive group; Chemical reactivity increases down a column
  • Soft and very malleable
  • None of them exist uncombined in nature
  • React violently with water
  • Lowest ionization energies within each period
  • Lowest electronegativity within each period
  • Have one valence electron
  • Have an effective nuclear charge = +1
  • ns1

ANSWER:

Group #1 – Alkali Metals

Jodi Grack; Wayzata High School

group summary2
Group Summary
  • Melting/boiling points decrease down the column
  • Fairly reactive; Chemical reactivity increases down a column
  • malleable
  • React moderately with water to form alkaline solutions (except one element)
  • Have two valence electrons
  • Have an effective nuclear charge = +2
  • ns2

ANSWER:

Group #2 – Alkaline Earth Metals

Jodi Grack; Wayzata High School

group summary3
Group Summary
  • Many of its elements form colored compounds
  • Contains some metals that exist uncombined in nature
  • The trend for metallic properties increases to the left.
  • Contains one metal that exists as a liquid
  • Have two valence electrons, but can form a variety of ions
  • Highest energy electrons fill into d-orbitals

ANSWER:

Group #2 – Transition Metals

Jodi Grack; Wayzata High School

group summary4
Group Summary
  • Melting/boiling points increase down columns.
  • Reactivity increases up the column.
  • Highly reactive elements
  • Contains solids, a liquid, and gases
  • All nonmetals
  • Exist as diatomic molecules
  • Contain 1 unpaired p-electron
  • Have seven valence electrons
  • Have relatively large ionization energies
  • Have the largest electronegativities within their period
  • Form -1 ions
  • ns2np5

ANSWER:

Group #7 – Halogens

Jodi Grack; Wayzata High School

group summary5
Group Summary
  • Fairly reactive elements
  • Contain 2 unpaired p-electrons
  • Form -2 ions
  • Have 6 valence electrons
  • Some exist as gases, some as solids
  • ns2np4

ANSWER:

Group #6 – Oxygen Group

Jodi Grack; Wayzata High School

group summary6
Group Summary
  • Its metals form +3 ions (and sometimes +1 ions)
  • Contains one metalloid
  • All elements are solids
  • Contain one unpaired p-electron, the other p-orbitals are empty
  • ns2np1

ANSWER:

Group #3 – Boron Group

Jodi Grack; Wayzata High School

group summary7
Group Summary
  • Relatively unreactive elements
  • Metals form +2 and +4 ions
  • Contains 4 valence electrons
  • All are solids
  • Have 2 unpaired p-electrons
  • ns2np2

ANSWER:

Group #4 – Carbon Group

Jodi Grack; Wayzata High School

group summary8
Group Summary
  • Relatively unreactive
  • Nonmetals form -3 ions
  • Some gases and some solids
  • Metal, nonmetal and metalloids
  • Has 3 unpaired p-electrons
  • Contains 5 valence electrons
  • ns2np3

ANSWER:

Group #5 – Nitrogen Group

Jodi Grack; Wayzata High School

group summary9
Group Summary
  • Most elements are synthetic
  • Many are phosphors
  • Most are radioactive
  • Highest energy electrons fill into f-orbitals

ANSWER:

Innner Transition metals/Rare Earth Elements (lanthanides & actinides)

Jodi Grack; Wayzata High School