Why do electronegativity and ionization energy increase as you move across a period from left to right?
the increasing number of protons causes a greater electromagnetic attraction between the protons & electrons, making it more difficult to remove electrons
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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.
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25
The periodic trend that describes the strength of the electromagnetic attraction between protons and electrons within the atom is...
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Nonmetals are located on the (left or right) side of the periodic table?
right
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15
Which atom is larger, potassium or bromine?
potassium
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5
How many energy levels does an aluminum atom have?
3
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True or False: Atoms can lose or gain electrons to obtain a full set of 8 valence electrons (an octet).
True
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10
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)
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15
True or False: Nonmetals tend to gain valence electrons to form stable ions.
True
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The periodic trend that describes the amount of energy required to remove an electron from an atom is ...
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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.
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The periodic trend that describes the relative size of the atom is ...
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25
Which element is larger magnesium or calcium? why?
