AnswersChemistry Honors AThe Structure of the Atom

Periodic Trends Answers

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Which element has a larger atomic radius than sulfur?

A
chlorine
B
cadmium
C
fluorine
D
oxygen
2
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Selected properties of antimony (Sb) and iodine (I) are listed in the table below.ElementAtomic radius(pm)First ionization energy(kJ/mol)Electron affinity(kJ/mol)ElectronegativitySb145?–1032.05I1401008–295?Which predictions can most likely be made?

A
Sb has a lower ionization energy but a higher electronegativity than I.
B
Sb has a higher ionization energy but a lower electronegativity than I.
C
Sb has a lower ionization energy and a lower electronegativity than I.
D
Sb has a higher ionization energy and a higher electronegativity than I.
3

Which element would release the most energy while adding an electron to a neutral atom in the gas phase?

A
Na
B
Al
C
Br
D
S
4

The most negative electron affinity is most likely associated with which type of atoms?

A
large nonmetal atoms
B
small nonmetal atoms
C
large metal atoms
D
small metal atoms
5

Which ion was formed by providing the second ionization energy to remove an electron?

A
Ca2+
B
N3–
C
Fe3+
D
S2–
6

When electrons are added to the outermost shell of a carbon atom, it forms

A
an anion that has a larger radius.
B
an anion that has a smaller radius.
C
a cation that has a larger radius.
D
a cation that has a smaller radius.
7

The graph below shows the electronegativities of the elements in the periodic table.Which would least strongly attract electrons from other atoms in a compound?

Question illustration
A
elements of group 1
B
elements of group 2
C
elements of group 15
D
elements of group 17
8

How does a lithium cation compare to a lithium atom?

A
The cation is larger.
B
The cation has the same radius.
C
The cation is smaller.
D
The cation has the same charge.
9

Which best describes ionization energy?

A
energy needed to add an electron to a neutral atom in the gas phase
B
energy needed to add an electron to a neutral atom in the liquid phase
C
energy needed to remove an electron from an atom or ion in the gas phase
D
energy needed to remove an electron from an atom or ion in the liquid phase
10

Among the elements of the main group, the first ionization energy increases

A
from left to right across a period.
B
from right to left across a period.
C
when the atomic radius increases.
D
down a group.

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