Deck 2: Atoms and the Periodic Table

Question 1

An atom with Z = 26 and A = 58 contains ________ protons and ________ neutrons.

A)26; 58
B)58; 26
C)26; 32
D)32; 26
E)26; 84

Answer 1

26; 32

Question 2

An atom containing 47 protons,47 electrons,and 60 neutrons has a mass number of

A)13.
B)47.
C)60.
D)107.
E)154.

Answer 2

107.

Question 3

In a neutral atom the number of ________ is equal to the number of ________.

A)protons,electrons
B)protons,neutrons
C)neutrons,electrons
D)protons + electrons,neutrons
E)none of the above

Answer 3

protons,electrons

Question 4

Which statement is incorrect according to modern atomic theory?

A)Some sugars have the formula C_3.5H₇O_3.5.
B)An atom of ¹⁴N has the same approximate mass as an atom of ¹⁴C.
C)An atom of ¹⁴N behaves differently in chemical reactions than an atom of ¹⁴C.
D)An example of a chemical reaction is CaCO₃ → CaO + CO₂.
E)C₂H₆ and C₃H₈ are both possible compounds of carbon and hydrogen.

Question 5

Which particle has a mass approximately equal to the mass of a proton?

A)atom
B)electron
C)neutron
D)nucleus
E)quark

Question 6

The smallest amount of an element that retains that element's characteristics is the

A)atom.
B)electron.
C)molecule.
D)neutron.
E)proton.

Question 7

An atom with Z = 35 and A = 80 contains ________ protons,________ electrons,and ________ neutrons.

A)35; 35; 80
B)80; 35; 35
C)35; 35; 45
D)45; 80; 45
E)45; 80; 35

Question 8

Where is most of the mass of an atom concentrated?

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

Question 9

Which characteristics correctly describe a neutron?

A)approximate mass 1 amu; charge +1; inside nucleus
B)approximate mass 1 amu; charge -1; inside nucleus
C)approximate mass 1 amu; charge 0; inside nucleus
D)approximate mass 5 × 10^-4 amu; charge 0; inside nucleus
E)approximate mass 5 × 10^-4 amu; charge -1; outside nucleus

Question 10

Which characteristics correctly describe a proton?

A)approximate mass 1 amu; charge +1; inside nucleus
B)approximate mass 5 × 10^-4 amu; charge -1; outside nucleus
C)approximate mass 5 × 10^-4 amu; charge +1; inside nucleus
D)approximate mass 1 amu; charge 0; inside nucleus
E)approximate mass 1 amu; charge +1; outside nucleus

Question 11

The value for Z for an atom containing 47 protons,47 electrons,and 60 neutrons is

A)13.
B)47.
C)60.
D)107.
E)154.

Question 12

For the isotope ⁷¹Ga,Z = ________ and A = ________.

A)31; 40
B)71; 31
C)71; 40
D)31; 71
E)31; 69.723

Question 13

Protons possess a ________ charge,and neutrons possess a ________ charge.

A)negative,negative
B)negative,positive
C)positive,negative
D)positive,zero
E)zero,positive

Question 14

Another name for atomic mass unit (amu)is the

A)avogadro.
B)dalton.
C)Kekule
D)kelvin.
E)mendeleev.

Question 15

An atom containing 29 protons,29 electrons,and 34 neutrons has a mass number of

A)5.
B)29.
C)34.
D)58.
E)63.

Question 16

The atomic number of an atom containing 47 protons,47 electrons,and 60 neutrons is

A)13.
B)47.
C)60.
D)107.
E)154.

Question 17

Which characteristics correctly describe an electron?

A)approximate mass 1 amu; charge +1; inside nucleus
B)approximate mass 1 amu; charge -1; inside nucleus
C)approximate mass 1 amu; charge 0; inside nucleus
D)approximate mass 5 × 10^-4 amu; charge 0; inside nucleus
E)approximate mass 5 × 10^-4 amu; charge -1; outside nucleus

Question 18

Protons possess a ________ charge,and electrons possess a ________ charge.

A)negative,negative
B)negative,positive
C)positive,negative
D)positive,zero
E)zero,positive

Question 19

The value of Z for the element ³⁷Ar is ________.

A)37
B)39.945
C)19
D)21.945
E)18

Question 20

The atomic number of an atom containing 29 protons,29 electrons,and 34 neutrons is

A)5.
B)29.
C)34.
D)58.
E)63.

Question 21

An isotope with 15 protons and 17 neutrons will have which symbol?

A)

Cl
B)

Cl
C)

P
D)

P
E)

P

Question 22

The number of neutrons in an atom is equal to:

A)atomic number - mass number
B)mass number - atomic number
C)the atomic number
D)the mass number

Question 23

Atoms of
Cl contain ________ protons and ________ neutrons.

A)17; 17
B)17; 18
C)18; 17
D)35; 18
E)35; 17

Question 24

Consider the isotope
Br.The atomic number is ________,and the mass number is ________.

A)79; 35
B)35; 79
C)44; 35
D)35; 44
E)35; 114

Question 25

The mass number of Br-81 is ________.

A)81
B)79.904
C)79
D)46
E)35

Question 26

Adding one proton to the nucleus of an atom

A)converts it to an isotope of the same element.
B)increases its atomic mass by one unit,but does not change its atomic number.
C)increases its atomic number by one unit but does not change its atomic mass.
D)does not change either its atomic number or its atomic mass.
E)converts it to an atom of a different element.

Question 27

How many neutrons does an atom of
Ti have?

A)0
B)22
C)24
D)46
E)68

Question 28

The value of Z for an atom containing 29 protons,29 electrons,and 34 neutrons,is

A)5.
B)29.
C)34.
D)58.
E)63.

Question 29

Adding one neutron to the nucleus of an atom

A)converts it to an isotope of the same element.
B)increases its atomic mass by two units,but does not change its atomic number.
C)increases its atomic number by one unit but does not change its atomic mass.
D)does not change either its atomic number or its atomic mass.
E)converts it to an atom of a different element.

Question 30

The value of A for an atom containing 29 protons,29 electrons,and 34 neutrons is

A)5.
B)29.
C)34.
D)58.
E)63.

Question 31

The symbol of the element with 23 protons is

A)Mg.
B)Na.
C)V.
D)B.
E)none of the above

Question 32

An imaginary element Xq consists of two isotopes having masses of 100.0 amu and 102.0 amu.A sample of Xq was found to contain 20.0% of the ¹⁰⁰Xq isotope and 80.0% of the ¹⁰²Xq.Calculate the atomic weight of Xq.

A)100.2 amu
B)100.4 amu
C)101.0 amu
D)101.6 amu
E)202.0 amu

Question 33

An atom that contains 47 protons,47 electrons,and 60 neutrons is an isotope of

A)Ag.
B)Al.
C)Nd.
D)Bh.
E)cannot be determined from the information given

Question 34

Cobalt is element 27.Cobalt-60 is used in the medical treatment of cancer.How many neutrons and protons are contained in the nucleus of this isotope?

A)27 neutrons,33 protons
B)33 neutrons,27 protons
C)27 neutrons,27 protons
D)33 neutrons,33 protons

Question 35

Atoms of
Cl contain ________ protons and ________ electrons.

A)17; 17
B)17; 18
C)18; 17
D)35; 18
E)35; 17

Question 36

Hydrogen exists as three isotopes.These isotopes differ by the number of ________ contained in the atom.

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

Question 37

An atom with a mass number of 58 and with 32 neutrons will have ________ protons.

A)16
B)26
C)32
D)58
E)90

Question 38

The value for A for an atom containing 47 protons,47 electrons,and 60 neutrons is

A)13.
B)47.
C)60.
D)107.
E)154.

Question 39

An atom with Z = 31 and A = 69 contains ________ protons and ________ neutrons.

A)31; 69
B)69; 31
C)31; 38
D)38; 31
E)31; 100

Question 40

Naturally occurring iron contains 5.82% ⁵⁴Fe,91.66 % ⁵⁶Fe,2.19% ⁵⁷Fe,and 0.33% ⁵⁸Fe.The respective atomic masses are 53.940 amu,55.935 amu,56.935 amu,and 57.933 amu.Calculate the average atomic mass of iron.

Question 41

How many electrons can occupy the shell having n = 2?

A)2
B)6
C)8
D)18
E)32

Question 42

Which group contains only noble gases?

A)Ni,Pd,Pt
B)Si,Ge,As
C)Ce,Pr,Nd
D)Kr,Xe,Rn
E)Po,Fr,Ac

Question 43

Which elements all belong in the same group?

A)C,N,O
B)Fe,Cu,Ni
C)B,Si,As
D)F,Cl,Br
E)Al,Ge,Sb

Question 44

Which of the following elements is a noble gas?

A)Cl
B)H
C)N
D)Ne
E)O

Question 45

What is the maximum number of electrons that can occupy the 4f orbitals?

A)2
B)6
C)8
D)10
E)14

Question 46

Which of the following is an alkali metal?

A)Al
B)Cl
C)He
D)Na
E)O

Question 47

How many electrons can occupy the 4d subshell?

A)1
B)2
C)6
D)8
E)10

Question 48

Which element is not a semimetal?

A)Al
B)Si
C)Ge
D)As
E)none of the above

Question 49

How many electrons can occupy the shell having n = 4?

A)2
B)8
C)10
D)18
E)32

Question 50

Elements in the Periodic Table are arranged according to

A)alphabetical order.
B)atomic number.
C)atomic weight.
D)date of discovery.
E)number of neutrons.

Question 51

The maximum number of electrons in any orbital is ________.

A)1
B)2
C)3
D)4
E)5

Question 52

Which column of the periodic table contains only nonmetals?

A)4A
B)5A
C)6A
D)7A

Question 53

Which group contains only metalloids?

A)Ni,Pd,Pt
B)Si,Ge,As
C)Ce,Pr,Nd
D)Kr,Xe,Rn
E)Po,Fr,Ac

Question 54

Which element is most likely to have chemical properties similar to those of bromine (atomic number 35)?

A)S (atomic number 16)
B)Se (atomic number 34)
C)Kr (atomic number 36)
D)Te (atomic number 52)
E)I (atomic number 53)

Question 55

Magnesium is an example of a(an)

A)alkali metal.
B)alkaline earth.
C)halogen.
D)noble gas.
E)transition metal.

Question 56

Which group of elements contains only non-metals?

A)Mg,Ca,Sr
B)V,Cr,Mn
C)Cl,Ar,K
D)P,As,Se
E)C,S,I

Question 57

An imaginary element Xz consists of two isotopes having masses of 100.0 amu and 102.0 amu.A sample of Xz was found to contain 75.0% of the ¹⁰⁰Xz isotope and 25.0% of the ¹⁰²Xz.Calculate the atomic weight of Xz.

A)100.3 amu
B)100.5 amu
C)101.0 amu
D)101.5 amu
E)101.8 amu

Question 58

Which of the following represents a pair of isotopes?

A).¹⁴₆C,¹⁴₇N
B).¹₁H,²₁H
C).³²₁₆S,³²₁₆S^-2
D)O₂,O₃

Question 59

Which element is most likely to have chemical properties similar to those of potassium (atomic number 19)?

A)Ar (atomic number 18)
B)Ca (atomic number 20)
C)Sc (atomic number 21)
D)Rb (atomic number 37)
E)Sr (atomic number 38)

Question 60

How many electrons can occupy the 4s subshell?

A)1
B)2
C)6
D)8
E)10

Question 61

Which of the following subshells consists of five orbitals?

A)4s
B)4p
C)4d
D)4f
E)none of the above

Question 62

The electron capacity of the third shell is ________.

A)8
B)10
C)18
D)24
E)32

Question 63

The element with the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ is

A)Rb.
B)Ar.
C)Ca.
D)K.
E)Mg.

Question 64

The correct order for filling orbitals with electrons is ________.

A)1s,2s,2p,3s,3d,4s,3p
B)1s,2s,3s,4s,2p,3p,3d
C)1s,2s,2p,3s,3p,4s,3d
D)1s,2s,3d,2p,3p,3s,4s

Question 65

The shell having n = 2 contains ________ subshells,________ orbitals,and up to ________ electrons.

A)1,2,4
B)2,4,8
C)3,6,12
D)4,8,16
E)none of the above

Question 66

The ground state electron configuration for nickel is

A)1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰.
B)1s² 2s² 2p⁶ 3s² 4s² 3d¹⁰ 4p⁴.
C)1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 4d⁸.
D)1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁸.

Question 67

Explain the term "quantized" as it applies to the energy of electrons.(Optional: Be sure to include an example that has not been previously mentioned of something that is quantized. )

Question 68

The electron configuration for phosphorus is

A)1s² 1p⁶ 2s² 2p⁵.
B)1s² 2s² 2p⁶ 3p⁵.
C)1s² 2s² 2p⁶ 3s⁴ 3p¹.
D)2s² 2p⁶ 3s² 3p⁵.
E)1s²2s²2p⁶3s²3p³.

Question 69

An element with the same number of valence electrons as the element with the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁵ is

A)iodine.
B)oxygen.
C)argon.
D)potassium.
E)sulfur.

Question 70

At maximum,an f subshell can hold ________ electrons,a d subshell can hold ________ electrons and a p subshell can hold ________ electrons.

A)14,10,6
B)2,8,18
C)18,8,2
D)2,12,21
E)14,6,10

Question 71

The element with the electron configuration 1s² 2s² 2p⁴ is ________.

A)Be
B)C
C)O
D)Si
E)S

Question 72

Which group contains only f-block elements?

A)Ni,Pd,Pt
B)Si,Ge,As
C)Ce,Pr,Nd
D)Kr,Xe,Rn
E)Po,Fr,Ac

Question 73

The element with the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁵ is

A)fluorine.
B)chlorine.
C)carbon.
D)potassium.
E)sulfur.

Question 74

What is the electron configuration of Fe?

A)1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁸
B)1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶
C)1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 4p⁶
D)1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
E)1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁶

Question 75

What is the maximum number of electrons that can occupy the 3d orbitals?

A)2
B)6
C)8
D)10
E)14

Question 76

What is the electron configuration of Mg?

A)1s² 2s² 2p⁸
B)1s² 2s² 2p⁶ 3s²
C)1s² 2s² 2p⁶ 3s¹ 3p³
D)1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁵
E)none of the above

Question 77

Which of the following subshells consists of three orbitals?

A)4s
B)4p
C)4d
D)4f
E)none of the above

Question 78

What is the electron configuration of S?

A)1s² 2s² 2p²
B)1s² 2s² 2p⁶ 3s² 3p²
C)1s² 2s² 2p⁶ 3s² 3p⁴
D)1s² 2s² 2p⁶ 3s² 3p⁶
E)1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹

Question 79

The shell having n = 3 contains ________ subshells,________ orbitals,and up to ________ electrons

A)2,4,8
B)3,6,12
C)3,6,18
D)3,9,18
E)3,12,36

Question 80

The number of valence electrons in an element with electron configuration
1s² 2s² 2p⁶ 3s² 3p⁴ is ________.

A)2
B)4
C)6
D)8
E)16