More atomic structure Name: 1.
2.
Date:
Explain, in terms of atomic structure, why the atomic radius of iodine is greater than the atomic radius of uorine.
5.
An atom in the ground state contains 8 valence electrons. This atom is classi ed as A.
metal
B.
C.
noble gas
D. halogen
In which shell are the valence electrons of the elements in Period 2 found? A.
1
B.
2
C.
3
D. 4
6.
When compared with the energy of an electron in the rst shell of a carbon atom, the energy of an electron in the second shell of a carbon atom is A.
3.
less
B.
greater
C.
the same
An atom of which of the following elements has the smallest covalent radius? A.
Li
B.
Be
C.
C
D. F 7.
Given an atom with the electron con guration 2s2 2s2 2p3 , how many orbitals are completely lled? A.
4.
semimetal
1
B.
2
C.
3
D. 4
Which statement describes the relative energy of the electrons in the shells of a calcium atom? A.
An electron in the rst shell has more energy than an electron in the second shell.
B.
An electron in the rst shell has the same amount of energy as an electron in the second shell.
C.
An electron in the third shell has more energy than an electron in the second shell.
8.
D. An electron in the third shell has less energy than an electron in the second shell.
page 1
An electron in a sodium atom moves from the third shell to the fourth shell. This change is a result of the atom A.
absorbing energy
B.
releasing energy
C.
gaining an electron
D. losing an electron
9.
The total number of sublevels in the fourth principal energy level of an atom is A.
10.
1
B.
2
C.
3
13.
D. 4
What is the highest principal quantum number assigned to an electron in an atom of zinc in the ground state? A.
1
B.
2
C.
5
D. 4
Which electron transition represents a gain of energy? A.
from 2nd to 3rd shell
B.
from 2nd to 1st shell
C.
from 3rd to 2nd shell
14.
Base your answer(s) to the following question(s) on the information below. An atom in an excited state has an electron con guration of 2-7-2.
D. from 3rd to 1st shell
Explain, in terms of subatomic particles, why this excited atom is electrically neutral.
11.
The total number of d orbitals in the third principal energy level is A.
1
B.
5
C.
3
D. 7
15.
12.
The characteristic bright-line spectrum of an element is produced when electrons
The characteristic bright-line spectrum of an atom is produced when
A.
are given o
B.
are gained from another atom
A.
nuclei of atoms undergo ssion
C.
move to higher energy levels
B.
nuclei of atoms undergo fusion
D. fall back to lower energy levels
C.
electrons move from higher to lower energy levels
as beta particles
D. electrons move from lower to higher energy levels
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More atomic structure
16.
The diagram below represents the bright-line spectra of four elements and a bright-line spectrum produced by a mixture of two of these elements.
19.
What is the total number of sublevels that contain electrons in an atom of zinc in the ground state? A.
20.
Which two elements are in this mixture? A.
barium and hydrogen
B.
barium and lithium
C.
helium and hydrogen
7
B.
2
C.
The Balmer series refers to the visible bright lines in the spectrum produced by hydrogen atoms. The color and wavelength of each line in this series are given in the table below. Balmer Series for Hydrogen Color
Wavelength (nm)
blue green
486.1
red
656.3
blue
434.1
violet
1
B.
7
C.
3
D. 5
21.
18.
What is the total number of sublevels that contain electrons in the third principal energy level of a nickel atom in the ground state? A.
1
B.
2
C.
3
410.2
Explain, in terms of both subatomic particles and energy states, how the Balmer series is produced.
What is the total number of orbitals in the d sublevel of an atom? A.
D. 30
Base your answer(s) to the following question(s) on the information below.
D. helium and lithium
17.
10
D. 4
..
. In the electron-dot symbol . N . , the dots represent electrons located in A.
s sublevels, only
B.
p sublevels, only
C.
s and p sublevels, only
D. s, p, and d sublevels
page 3
More atomic structure
22.
Four valence electrons of an atom in the ground state would occupy the A.
s sublevel, only
B.
p sublevel, only
C.
s and p sublevels, only
26.
Which of the following sublevels contains the greatest number of orbitals? A.
p
B.
s
C.
f
D. d
D. s, p, and d sublevels 27.
Which atom in the ground state contains only one orbital that is partially occupied? A.
23.
4s
B.
4p
C.
4d
Ne
C.
Ca
D. Na
D. 4f
28.
Which sublevel has a total of 5 orbitals? A.
s
B.
f
C.
p
D. d
The wave-mechanical model of the atom is required to explain the A.
mass number and atomic number of an atom
B.
organization of atoms in a crystal
C.
radioactive nature of some atoms
29.
D. spectra of elements with multielectron atoms
25.
B.
In which sublevel would an electron have the highest energy? A.
24.
Si
A.
An atom has 8 electrons in a d sublevel. How many d orbitals in this sublevel are half lled? A.
1
B.
2
C.
3
What is the total number of partially occupied 2p orbitals in a nitrogen atom in the ground state?
30.
D. 4
page 4
1
B.
2
C.
3
D. 5
Explain, in terms of atomic structure, why Group 18 elements on the Periodic Table rarely form compounds.
More atomic structure
31.
Which diagram correctly represents an atom of uorine in an excited state? 1s
2s
2p
34.
3s
A.
$ $ $$" !
B.
$ " $$$ !
C.
$ $ $$$ !
D.
$ $ $$" "
Which orbital notation represents an atom in the ground state with 6 valence electrons? A.
B.
C.
D.
32.
Which orbital notation represents the second principal energy level of a silicon atom in the ground state? A.
,
,,,
B.
,
,++
C.
,
,))
D.
,
++) 35.
Which is the correct orbital notation of a lithium atom in the ground state? A.
B. 33.
Which orbital notation represents an atom of beryllium in the ground state? A.
1s 2s + +
C.
1s 2s , ,
2p z }| { ++)
B.
2p z }| { )))
D. 1s 2s
1s 2s , +
+ )
C.
2p z }| { +) )
D.
2p z }| { ++ +
page 5
More atomic structure
36.
Which orbital notation correctly represents the outermost principal energy level of a nitrogen atom in the ground state? A.
S
C.
S
z
P }|
{
z
P }|
{
B.
S
D.
S
38.
Which orbital notation correctly represents a noble gas in the ground state? A.
z
P }|
{
z
P }|
{
B.
C.
D.
37.
Which orbital notation represents a boron atom in the ground state? A. 39. B.
Which orbital notation represents a noble gas in the ground state? A.
C.
B.
D.
C.
D.
page 6
More atomic structure
Problem-Attic format version 4.4.311 c 2011–2017 EducAide Software _ Licensed for use by Mark Gironda Terms of Use at www.problem-attic.com More atomic structure 1. Answer:
An iodine atom has more electron shells than a uorine
11/16/2017 20. Answer:
When the electron in an excited hydrogen atom returns from a higher energy state to a lower energy state, a speci c amount of energy is emitted.
2. Answer:
B
3. Answer:
D
4. Answer:
C
21. Answer:
C
5. Answer:
C
22. Answer:
C
6. Answer:
B
23. Answer:
D
7. Answer:
B
24. Answer:
D
8. Answer:
A
25. Answer:
B
9. Answer:
D
26. Answer:
C
10. Answer:
A
27. Answer:
D
11. Answer:
B
28. Answer:
D
12. Answer:
C
29. Answer:
C
13. Answer:
D
30. Answer:
14. Answer:
Light is emitted when the excited electron drops from a higher electron shell to a lower electron shell.
The number of protons equals the number of electrons.
Group 18 elements rarely form compounds because their atoms have stable electron con gurations. Their valence shells are completely lled.
All the elements have maximum numbers of valence electrons.
The atom has 11 protons and 11 electrons.
15. Answer:
D
16. Answer:
B
17. Answer:
31. Answer:
B
D
18. Answer:
32. Answer:
A
C
19. Answer:
33. Answer:
C
A
Atoms of Group 18 have a stable octet except He, which is stable with two electrons.
Teacher's Key 34. Answer:
B
35. Answer:
D
36. Answer:
A
37. Answer:
B
38. Answer:
C
39. Answer:
A
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