AnswersChemistry Honors AElectrons and the Periodic Table

Electrons and the Periodic Table — Unit test Answers

0 verified answers2 views
21
Free Preview

What is the atomic number of zirconium?

A
39
B
40
C
41
D
42
22
Free Preview

How many valence electrons does aluminum (Al) have available for bonding?

A
1
B
2
C
3
D
4
23

Which statement best describes how electrons fill orbitals in the periodic table?

A
Electrons fill orbitals in order of their increasing energy from left to right.
B
Electrons fill orbitals in order of their increasing energy from right to left.
C
Elements fill orbitals in order of increasing energy from top to bottom in each group.
D
Elements fill orbitals in order of increasing energy from bottom to top in each group.
24

To show the electron configuration for an atom, when would it be better to use an orbital notation than to use a written configuration with numbers, letters, and superscripts?

A
when the aim is to use less space
B
when the aim is to show electron spins
C
when the aim is to show orbital shapes in subshells
D
when the aim is to show electron distributions in shells
25

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?

A
The ionization energy decreases because the full s orbital shields the electron entering the p orbital.
B
The ionization energy increases because the full s orbital shields the electron entering the p orbital.
C
The ionization energy decreases because the stability of the half-full p subshell is increased.
D
The ionization energy increases because the stability of the half-full p subshell is increased.

Did you find these answers helpful?

More from this Course

Quiz
25 verified answers

Unit Test

Assignment
20 verified answers

Assignment

Assignment
20 verified answers

Periodic Trends