Periodic Trends – Flashcards
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Which best describes the trends in electronegativity on the periodic table?
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not d
Electronegativity decreases down and to the right.
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Which element has a larger atomic radius than sulfur?
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not a
chlorine
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Which element has the smallest atomic radius?
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D - titanium
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Among the elements of the main group, the first ionization energy increases
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not b
from right to left across a period.
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Which is most likely true about electronegativity?
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not b
It tends to be the same down a group.
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How does a lithium cation compare to a lithium atom?
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C - The cation is smaller.
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Which correctly summarizes the trend in electron affinity?
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B - It tends to be more negative across a period.
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Which is true of transition metals when moving from left to right on the periodic table?
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not c/b
Atomic radii increase slightly and then start to decrease.
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Among the elements of the main group, the general trend in the first ionization energy moving across a period is not followed between group 2 and group 13.
Which best explains these exceptions?
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A - The ionization energy decreases because the full s orbital shields the electron entering the p orbital.
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When electrons are added to the outermost shell of a carbon atom, it forms
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not c
a cation that has a larger radius.
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Electronegativities of the elements Na, Al, P, and Cl follow a specific trend across the period. Based on this trend, an electron will be most strongly attracted to
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D - Cl
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Which element would release the most energy while adding an electron to a neutral atom in the gas phase?
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not b
Al
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Electronegativities of the elements Be, Mg, Ca, and Sr follow a specific trend within their group. Based on this trend, the atoms of which element will have the least attraction for an electron?
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not c
Ca
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Which element has the largest atomic radius?
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D -
Sb
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Which ion was formed by providing the second ionization energy to remove an electron?
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not D
S2-
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Which best describes ionization energy?
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C - energy needed to remove an electron from an atom or ion in the gas phase
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Which is most likely true about electronegativity?
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C - It tends to increase across a period.
