Which element is more electronegative nitrogen or bromine?
nitrogen (remember when elements are equidistant from fluorine the one with less energy levels is more electronegative)
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25
The periodic trend that describes the relative size of the atom is ...
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10
What does the period that an element is in tell you about its atomic structure?
the number of energy levels
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25
Which element is larger magnesium or calcium? why?
calcium because it has more energy levels
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5
How many valence electrons does a magnesium atom have?
2
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10
What are valence electrons?
electrons in the outermost energy level/shell
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5
How many valence electrons does an oxygen atom have?
6
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5
What are the horizontal rows of the Periodic Table called?
period(s)
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10
Metals tend to (gain or lose) electrons to obtain a full set of valence electrons and become stable.
lose
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5
How many energy levels does an aluminum atom have?
3
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25
Why does the atomic size decrease as you move across a period from left to right?
the increasing number of protons causes a greater electromagnetic attraction between the protons & electrons, pulling the electrons closer to the nucleus
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5
Nonmetals are located on the (left or right) side of the periodic table?
right
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20
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.
