AnswersChemistry Honors AElectrons and the Periodic Table

Periodic Trends Answers

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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?

A
Be
B
Mg
C
Ca
D
Sr
2
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Which explains the change in ionization energy that occurs between removing the first and second electrons from an atom?

A
The ionization energy decreases because the ratio of the protons to electrons increases.
B
The ionization energy increases because the ratio of the protons to electrons increases.
C
The ionization energy decreases because the ratio of the protons to electrons decreases.
D
The ionization energy increases because the ratio of the protons to electrons decreases.
3

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.
4

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.
5

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

A
Na.
B
Al.
C
P.
D
Cl.

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Periodic Trends Answers — Chemistry Honors A