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PBHS Ions

Ions and Bonding CA Study Cards

QuestionAnswer
What are valence electrons? electrons in the outermost shell
What is the octet rule? atoms gain, lose, or share electrons to get the stable number 8 valence electrons
According to the octet rule, how many valence electrons makes an atom or ion stable? 8
How many valence electrons make an atom or ion stable when they are in the first shell? 2
Individual vertical columns on the periodic table are called what? Groups
How many valence electrons do all elements in Group 2 have? 2
How many valence electrons do all elements in Group 17 have? 7
How many valence electrons do all elements in Group 13 have? 3
How many valence electrons do all elements in Group 1 have? 1
How many valence electrons do all elements in Group 15 have? 5
How many valence electrons do all elements in Group 14 have? 4
How many valence electrons do all elements in Group 16 have? 6
How many valence electrons do all elements in Group 18 have? 8 (except He)
What is the charge of a cation? positive
What is the charge of an anion? negative
In order to become a cation, an atom must do what? LOSE electrons
In order to become an anion, an atom must do what? gain electrons
All Group 1 elements become cations with what charge (oxidation #)? 1+ (+1)
Group 15 elements have what oxidation # as anions? 3- (-3)
Group 13 elements have what charge as ions? +3 (3+)
Group 17 elements have what oxidation # (charge as an ion)? 1- (-1)
Group 18 has what oxidation number? 0 or none
Group 2 elements have what charge as ions? 2+ (+2)
Group 16 elements have what oxidation number? 2- (-2)
Why do Groups 15, 16, and 17 form anions instead of cations? their valence # is above 4, so It takes less energy for them to gain electrons to become stable
Why do Groups 1, 2, and 13 form cations instead of anions? their valence # is less than 4, so it takes less energy to lose 1, or 2, or 3 electrons for them
By forming ions, what are atoms trying to achieve? a stable # of valence electrons or valence shell
Gaining electrons forms which kind of ions? anions (negative ions)
Losing electrons forms which kind of ions? cations (positive ions)
Metals tend to do this to become stable when forming ions. lose electrons
Nonmetals tend to do this to become stable when forming ions. gain electrons
The Transition Metals also tend to give up 1 or more electrons to become stable. True or False? True
Group 17 is called what family? Halogens
Group 2 is called what family? Alkaline Earth Metals
Which group is the Noble Gases? Group 18
Created by: gkarlish