Answers26-27 CFISD TX-Chemistry A CRThe Modern Atomic Theory

The Modern Atomic Theory Answers

13 verified answers4 views
4

Br <

A
Cl
B
I
C
Se
6

Use the periodic table to answer the following question:What are the periodic trends of ionic radii? Check all that apply.

A
Ionic radii tend to increase down a group.
B
Ionic radii tend to decrease across a period.
C
Anionic radii tend to increase across a period.
D
Cationic radii tend to decrease across a period.
E
Ionic radii increase when switching from cations to anions in a period.
9

Why are the trends and exceptions to the trends in ionization energy observed? Check all that apply.

A
Ionization energy tends to increase down a group because the electrons get farther away from the nucleus.
B
Ionization energy tends to increase across a period because the nuclear charge increases.
C
Ionization energy tends to increase across a period because electrons are added to the same main energy level.
D
The ionization energies of the elements in Group 16 tend to be slightly smaller than the elements in Group 15 because the fourth electron is added to an unfilled p orbital.
E
The ionization energies of elements in Group 13 tend to be lower than the elements in Group 2 because the full s orbital shields the electron in the p orbital from the nucleus.
10

What are the trends and exceptions to the trends in electron affinity? Check all that apply.

A
The electron affinities of the elements in Group 17 are larger (more negative) than the elements in Group 1.
B
Electron affinities increase (become more negative) down a group.
C
Elements in Group 14 have larger (more negative) electron affinities than elements in Group 15.
D
Elements in Group 2 have very large electron affinities.
12

P >

A
As
B
N
C
S
13

C <

A
B
B
Ge
C
N

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