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What are the horizontal rows of the Periodic Table called?
period(s)
What are the vertical columns of the Periodic Table called?
group(s)/ family(families)
What does the period that an element is in tell you about its atomic structure?
the number of energy levels
What does the group/family that an element is in tell you about its atomic structure?
the number of valence electrons (electrons in the outermost energy level/shell)
How many valence electrons does an oxygen atom have?
6
How many valence electrons does a magnesium atom have?
2
How many energy levels does an aluminum atom have?
3
What are valence electrons?
electrons in the outermost energy level/shell
With the exception of helium, how many valence electrons do all noble gas elements have?
8
Atomic radius (increases or decreases) as you move down a group/family and (increases or decreases) as you move across a period from left to right.
Atomic radius INCREASES as you move down a group/family and DECREASES as you move across a period from left to right.
Electronegativity (increases or decreases) as you move down a group/family and (increases or decreases) as you move across a period from left to right.
Electronegativity DECREASES as you move down a group/family and INCREASES as you move across a period from left to right.
Ionization energy (increases or decreases) as you move down a group/family and (increases or decreases) as you move across a period from left to right.
Ionization energy DECREASES as you move down a group/family and INCREASES as you move across a period from left to right.
Electron affinity (increases or decreases) as you move down a group/family and (increases or decreases) as you move across a period from left to right.
Electron affinity DECREASES as you move down a group/family and INCREASES as you move across a period from left to right.
The periodic trend that describes the relative size of the atom is ...
electron affinity
ionization energy
electronegativity
atomic radius
The periodic trend that describes the amount of energy required to remove an electron from an atom is ...
electronegativity
ionization energy
electron affinity
atomic radius
The periodic trend that describes the amount of energy released when an atom gains an electron is ...
electronegativity
ionization energy
atomic size
electron affinity
