Deck 6: Electronic Structure and Chemical Periodicity

Question 1

The periodic law states that when elements are arranged in order of ________ their properties repeat themselves at regular intervals.

A) increasing atomic number
B) decreasing atomic number
C) increasing atomic mass
D) decreasing atomic mass

Answer 1

increasing atomic number

Question 2

Elements constituting a period in the periodic table ________.

A) have similar chemical properties
B) are called isotopes
C) have consecutive atomic numbers
D) will always be in the same group

Answer 2

have consecutive atomic numbers

Question 3

In which of the following sets of elements are all members of the set in the same group in the periodic table?

A) ₉F, ₁₀Ne, and ₁₁Na
B) ₃₁Ga, ₄₉In, and ₈₁Tl
C) ₁₄Si, ₁₅P, and ₁₆S
D) ₂₀Ca, ₂₆Fe, and ₃₄Se

Answer 3

₃₁Ga, ₄₉In, and ₈₁Tl

Question 4

Which one of the following elements occupies position period 5 and group IIA in the periodic table?

A) B
B) Y
C) Sr
D) Kr

Question 5

Which of the following elements occupies position Period 5 and Group IIIA in the periodic table?

A) P
B) In
C) As
D) Tl

Question 6

Group IA elements are called:

A) alkali metals
B) alkaline earth metals
C) noble gases
D) halogens

Question 7

The elements in groups IA, VIIA and VIIIA are called, respectively:

A) alkaline earth metals, halogens, chalcogens
B) alkali metals, chalcogens, halogens
C) alkali metals, halogens, noble gases
D) alkaline earth metals, transition metals, halogens

Question 8

Which of the following is a quantized property of an electron?

A) energy
B) nuclear charge
C) number
D) charge to mass ratio

Question 9

The maximum number of electrons found in a shell ________.

A) is the same as the shell number
B) doubles as the shell number increases by one
C) varies in an unpredictable manner
D) is equal to 2n²

Question 10

What is the maximum number of electrons in the n = 4 shell?

A) 16
B) 8
C) 18
D) 32

Question 11

Which response includes all the following statements that are true, and no others?
I. The f subshell contains 7 orbitals.
II. The third energy shell (n=3) has no f orbitals.
III. There are ten d orbitals in the d subshell.
IV. The second energy shell contains only s and p orbitals.
V. An orbital can accommodate a maximum of 2 electrons.

A) I, II, and IV
B) II, III, and V
C) II and IV
D) I, II, IV, and V

Question 12

Which of the following subshells is lowest in energy?

A) 6s
B) 3d
C) 4s
D) 5d

Question 13

How many subshells are in the n = 3 shell?

A) 2
B) 3
C) 4
D) 5

Question 14

How many subshells are present in the third electron shell?

A) 1
B) 2
C) 4
D) 3

Question 15

In the ground state of an atom, ________.

A) the excited states are all filled
B) all the electrons are in their lowest energy levels
C) the protons and neutrons fill all the available energy states
D) the energy of the electrons are at a maximum

Question 16

The term "main energy level" is closely associated with the term ________.

A) supershell
B) shell
C) subshell
D) orbital

Question 17

Which of the following statements concerning electron subshells is correct?

A) Electrons in a subshell have equal energies.
B) The number of subshells in a shell is equal to S².
C) Subshells are identified by a whole number integer only.
D) A "p" subshell exists in all shells.

Question 18

Which of the following statements about a d subshell is incorrect?

A) It contains 5 orbitals.
B) It may contain a maximum of 10 electrons.
C) Is found in the 3rd energy level only.
D) It is found in all energy levels where n=3.

Question 19

The shape of an orbital is most closely related to which of the following factors?

A) the average energy of electrons within the shell containing the orbital
B) the shell in which the orbital is located
C) the type of subshell in which the orbital is located
D) the number of electrons within the orbital

Question 20

Which statement about orbitals is incorrect?

A) Different subshells have different shapes.
B) Two electrons can occupy each lobe of a p orbital.
C) At a given time, an electron can only be at one point in an orbital.
D) An orbital is a region of space where an electron is most likely to be found.

Question 21

What is the maximum number of electrons that the "d" subshell can hold?

A) 32
B) 10
C) 5
D) 6

Question 22

What is the maximum number of orbitals possible for the third principal energy level of an atom?

A) 5
B) 8
C) 10
D) 9

Question 23

The atomic orbital depicted is a(n) ________ orbital.

A) d
B) s
C) p
D) f

Question 24

The atomic orbital depicted below would be found in a ________ subshell.

A) 3p
B) 2s
C) 5d
D) 4f

Question 25

Which of the following is a representation for an p orbital?

A)
B)
C)
D)

Question 26

Which of the following subshell notations for electron occupancy is an impossibility?

A) 5s³
B) 4p⁵
C) 4f¹¹
D) 2p¹

Question 27

In an atom with many electrons, which of the following orbitals would be highest in energy?

A) 7s
B) 6d
C) 4p
D) 4f

Question 28

After the 5s subshell of an atom is filled with electrons, the next electron added will enter the ________.

A) 5p subshell
B) 4d subshell
C) 4p subshell
D) 5f subshell

Question 29

Indicate the missing words in the following statement: The Aufbau principle states that ________ normally occupy the lowest energy subshell available.

A) nucleus
B) electrons
C) protons
D) neutrons

Question 30

The correct electron configuration for chromium is ________.

A) 1s²2s²2p⁶3s²3p⁶4s¹3d⁵
B) 1s²2s²2p⁶3s²3p⁶3d⁶
C) 1s²2s²2p⁶3s²3p⁶
D) 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p¹

Question 31

The electron configuration 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p² is for the element ________.

A) Sb
B) Pb
C) As
D) Sn

Question 32

How many electrons are there in the outermost shell and subshell, respectively, in an atom with the electron configuration 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p¹?

A) 1, 10
B) 2, 2
C) 5, 3
D) 3, 1

Question 33

The element with the electron configuration given below is ________.
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹

A) Sc
B) Si
C) La
D) Y

Question 34

Which of the following electron configurations is incorrect as written?

A) 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁴
B) 1s²2s²2px²2py²2px²3s²
C) 1s²2s²2p⁶3s²3p⁶3d¹⁰
D) 1s²2s²2p⁶3s²

Question 35

Hund's rule is needed in drawing an orbital diagram for which of the following elements?

A) krypton
B) lithium
C) boron
D) selenium

Question 36

The number of unpaired electrons present in a magnesium atom is ________.

A) 0
B) 1
C) 3
D) 5

Question 37

How many unpaired electrons are in a Ru atom?

A) 2
B) 4
C) 6
D) 8

Question 38

In which pair are the atoms, Ba and Xe, correctly identified regarding their magnetic properties?

A) Ba: diamagnetic
Xe: diamagnetic
B) Ba: diamagnetic
Xe: paramagnetic
C) Ba: paramagnetic
Xe: diamagnetic
D) Ba: paramagnetic
Xe: paramagnetic

Question 39

In the electron configuration of an arsenic atom, there are ________ unpaired electrons.

A) 2
B) 0
C) 1
D) 3

Question 40

How many unpaired electrons are there in a phosphorous atom?

A) 1
B) 2
C) 3
D) 4

Question 41

How many unpaired electrons are there in a oxygen atom?

A) 0
B) 1
C) 2
D) 3

Question 42

Which orbital diagram is incorrect according to Hund's Rule?

A) Diagram I
B) Diagram II
C) Diagram III
D) Diagram IV

Question 43

How many unpaired electrons would be present in an orbital diagram for a strontium atom?

A) 0
B) 1
C) 2
D) 3

Question 44

Which element is represented by the electronic orbital diagram given?

A) phosphorus
B) sulfur
C) chlorine
D) selenium

Question 45

Which one of the following elements would be in the same group of the periodic table as the element whose configuration is
1s²2s²2p⁶3s²3p⁶4s¹?

A) ₃Li
B) ₁₅P
C) ₁₈Ar
D) ₃₄Se

Question 46

All of the elements in Group VIIA have an electron configuration that ends in ________.

A) p⁶
B) s²
C) d¹⁰
D) p⁵

Question 47

Which of the following pairings is incorrect?

A) Au - d area of periodic table
B) Ir - f area of periodic table
C) Xe - p area of periodic table
D) Be - s area of periodic table

Question 48

Which of the following elements has an electron configuration ending in 4f³?

A) ₄₀Zr
B) ₆₀Nd
C) ₇₃Ta
D) ₇₂Hf

Question 49

The distinguishing electron is in the same type of subshell for which of the following pairs of elements?

A) ₃Li and ₄₈Cd
B) ₁₇Cl and ₃₀Zn
C) ₅₁Sb and ₁₆S
D) ₇₇Ir and ₂₀Ca

Question 50

An atom of an element has an electron configuration ending in 3p⁴. Which of the following statements about the element's electron configuration is incorrect?

A) There are eight electrons in the 2nd shell.
B) The 3rd shell needs two more electrons to be completely filled.
C) There are six electrons in the 3rd shell.
D) Five different subshells contain electrons.

Question 51

Which of the following elements is an alkaline earth metal?

A) ₃₈Sr
B) ₂₁Sc
C) ₃₄Se
D) ₅₄Xe

Question 52

Which of the following element-classification pairings is incorrect?

A) K - representative element
B) Ar - noble gas
C) Mo - transition element
D) Po - halogen

Question 53

In which of the following pairs of elements is one element a metalloid and one element a nonmetal?

A) ₃₃As and ₁₄Si
B) ₅₁Sb and ₂₀Ca
C) ₃₂Ge and ₉F
D) ₈₂Pb and ₈₃Bi

Question 54

The number of known nonmetals is ________ the number of known metals.

A) about 1/4 that of
B) very small compared to
C) about four times greater than
D) about double

Question 55

In which of the following areas of the periodic table do you find both metals and nonmetals (ignoring the position of hydrogen)?

A) both s and p areas
B) s area only
C) p area only
D) both p and d areas

Question 56

Which column of the periodic table has 3 nonmetal and 2 metalloid elements?

A) Group III A
B) Group IV A
C) Group V A
D) Group VI A

Question 57

Which type of subshell is filled by the distinguishing electron of an alkaline earth metal?

A) d
B) s
C) p
D) f

Question 58

Which of the following statements concerning periodic trends is correct?

A) Metallic character decreases in moving from right to left across a given period in the periodic table.
B) Nonmetallic character increases in moving from top to bottom down a group in the periodic table.
C) Atomic radii tend to decrease from left to right in a period of the periodic table.
D) Atomic radii tend to decrease from top to bottom within a periodic table group.

Question 59

The largest atoms are found where in the periodic table?

A) in the transition metals
B) in the lower left
C) in the upper left
D) in the lower right

Question 60

Which of the following is not a metallic property?

A) shiny
B) conducting
C) malleable
D) brittle

Question 61

Which of the following elements would be expected to have the greatest nonmetallic character?

A) Al
B) Ga
C) In
D) B

Question 62

Which of the following elements has the largest atomic radius?

A) ₁₁Na
B) ₁₃Al
C) ₁₅P
D) ₁₇Cl

Question 63

Which of the following elements is a metal?

A) ₁₄Si
B) ₁₃Al
C) ₁₆S
D) ₃₃As

Question 64

Which is a characteristic property of nonmetals?

A) brittle
B) malleability
C) thermal conductivity
D) luster

Question 65

Which of the following elements would exhibit chemical properties most similar to nitrogen?

A) Ge
B) Zn
C) Sb
D) Ne

Question 66

Which of the following elements is a metalloid

A) Al
B) Si
C) N
D) Mg

Question 67

Which element is the most metallic?

A) fluorine
B) barium
C) zinc
D) scandium

Question 68

Which of the following atomic numbers is that of a noble gas?

A) 11
B) 32
C) 24
D) 10

Question 69

Arrange the following elements in order of increasing atomic radius.
Sr, Rb, Sb, I, In

A) Rb < Sr < In < Sb < I
B) I < Sb < In < Rb < Sr
C) In < Sb < I < Sr < Rb
D) I < Sb < In < Sr < Rb

Question 70

Rank the elements below in order of decreasing atomic radius.
Mg, Na, P, Si, Ar

A) Mg, Na, P, Si, Ar
B) Na, Mg, Si, P, Ar
C) Si, P, Ar, Na, Mg
D) Ar, Si, P, Na, Mg

Question 71

Indicate whether the following statements are true or false.

-An electron that has n = 5 could be in a s , p, d, or f sublevel.

Question 72

Indicate whether the following statements are true or false.

-The maximum number of electrons accommodated by the 4th energy shell (n = 4) is 32.

Question 73

Indicate whether the following statements are true or false.

-The third energy shell contains a total of 10 orbitals.

Question 74

Circle the correct symbol or the formula which has:

-Electron configuration ends in 5p³

A) ₃₃As
B) ₅₁Sb
C) ₇₃Ta
D) ₈₃Bi

Question 75

Circle the correct symbol or the formula which has:

-1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶

A) ₃₆Kr
B) ₃₄Se
C) ₃₈Sr
D) ₅₂Te

Question 76

Circle the correct symbol or the formula which has:

-4f subshell begins filling

A) ₃₇Rb
B) ₅₅Cs
C) ₅₈Ce
D) ₈₇Fr

Question 77

Circle the correct symbol or the formula which has:

-2nd energy shell contains 4 electrons

A) ₆C
B) ₁₄Si
C) ₄Be
D) ₁₄Si.

Question 78

Circle the correct symbol or the formula which has:

-3rd shell becomes completely filled

A) Mg
B) Hg
C) Zn
D) Cd

Question 79

Circle the correct symbol or the formula which has:

-Number of electrons in the 3d subshell of Mn

A) 0
B) 5
C) 7
D) 10

Question 80

Circle the correct symbol or the formula which has:

-Contains a total of twenty-one "p" electrons

A) ₃₆Kr
B) ₅₁Sb
C) ₅₄Xe
D) ₈₃Bi