Deck 5: Chemical Bonding

Question 1

Which of these is the most likely identity of element A in the Lewis dot structure?

A)Ca
B)K
C)N
D)Cl
E)O

Answer 1

Cl

Question 2

Which of these is the correct Lewis dot structure for sulfur?

A)
B)
C)
D)
E)

Answer 2

Question 3

Which of these will not form a positive ion in an ionic compound?

A)Ba
B)Rb
C)P
D)Sn
E)Mg

Answer 3

P

Question 4

What does the V in VSEPR theory stand for?

A)Very
B)Variable
C)Valence
D)Vanadium
E)Volume

Question 5

Which of these substances is\are covalent compound(s)?
I. CaO
II. H₂0
III. PF₃
IV. CH₄

A)I and II
B)II and III
C)II and IV
D)II, III, and IV
E)II only

Question 6

An element which has two valence electrons as an atom will most likely:

A)lose 2 electrons to become negatively charged and combine with a cation.
B)lose 2 electrons to become positively charged and combine with an anion.
C)gain 2 electrons to become negatively charged and combine with a cation.
D)gain 2 electrons to become positively charged and combine with an anion.
E)All of the above can occur.

Question 7

Which of these is the correct Lewis dot structure for carbon monoxide?

A)
B)
C)
D)
E)

Question 8

Which of these is the correct formula for aluminum oxide?

A)AlO
B)Al₂O
C)AlO₂
D)Al₂O₃
E)Al₂O₂

Question 9

Ionic bonds are formed when electrons are ____.

A)transferred
B)split
C)shared
D)destroyed
E)heated

Question 10

Which of these is the correct formula for sodium phosphide?

A)NaP
B)NaP₂
C)Na₃P
D)NaP₃
E)Na₃P₂

Question 11

Which of the following is true for sodium?

A)It is most stable as an atom.
B)It is most stable as a negatively charged ion.
C)It is most stable as a positively charged ion.
D)All forms of sodium are very stable.
E)All forms of sodium are very unstable.

Question 12

Which of these substances is\are ionic compound(s)?
I. NCl₃
II. MgF₂
III. AlBr₃
IV. CH₄

A)I and II
B)II and III
C)II and IV
D)II, III, and IV
E)II only

Question 13

Which of these is not a fundamental postulate of bonding proposed by Lewis?

A)Valence electrons are shared in covalent bonding.
B)The valence shell is involved in chemical bonding.
C)Atoms bond to achieve a more stable configuration.
D)Atoms bond to achieve an octet of electrons in the valence shell.
E)A stable electron configuration has six electrons in the valence shell.

Question 14

Which of these is the correct Lewis dot structure for chlorine?

A)
B)
C)
D)
E)

Question 15

Which of these is the most likely identity of element A in the Lewis dot structure?

A)Ca
B)Li
C)Al
D)Cs
E)P

Question 16

How many total valence electrons are there in the Lewis structure of NO₃ ^{− 1}?

A)32
B)30
C)20
D)22
E)None of these.

Question 17

Which of these is the correct formula for strontium iodide?

A)SrI
B)SrI₂
C)Sr₂I
D)SrI₃
E)Sr₂I₂

Question 18

Covalent bonds are formed when electrons are ____.

A)transferred
B)split
C)shared
D)destroyed
E)heated

Question 19

The total number of valence electrons in NO₂ ⁻¹ is

A)16
B)17
C)18
D)none of the above

Question 20

Which of these theories is utilized in the prediction of molecular shapes?

A)Dalton's Theory
B)VSEPR Theory
C)Bohr's Atomic Theory
D)Lewis Bonding Theory
E)Einstein's Theory of Relativity

Question 21

How many lone pairs of electrons are around the central atom in PCl₃?

A)0
B)1
C)2
D)3
E)20

Question 22

Which of these molecules contains a triple bond?

A)PCl₃
B)N₂
C)SO₂
D)H₂O
E)CO₂

Question 23

Barium fluoride is often used in glass manufacturing. Which of these is the correct formula and bonding type for barium fluoride?

A)BaF, ionic
B)BaF, covalent
C)BaF₂, ionic
D)BaF₂, covalent
E)Ba₂F, ionic

Question 24

Which of these is the correct Lewis dot structure for sulfur trioxide?

A)
B)
C)
D)
E)

Question 25

Which of the following is true about ozone?

A)Its Lewis structure is best represented with resonance structures.
B)It reduces the amount of ultraviolet radiation that reached the earth's surface.
C)It can be broken down by ultraviolet radiation.
D)All of the above.
E)None of the above.

Question 26

Which of these is the correct Lewis dot structure for nitrogen, N₂?

A)
B)
C)
D)

Question 27

Which of these molecules contains two double bonds?

A)PCl₃
B)N₂
C)SO₂
D)H₂O
E)CO₂

Question 28

How many lone pairs of electrons are around the central atom in CH₄?

A)0
B)1
C)2
D)3
E)4

Question 29

How many lone pairs of electrons are around the central atom in CO₂?

A)0
B)1
C)2
D)3
E)4

Question 30

How many bonding pairs of electrons are around the central atom in CO₂?

A)0
B)1
C)2
D)3
E)4

Question 31

Which of these molecules contains 1 double bond and 1 single bond?

A)PCl₃
B)NH₃
C)SO₂
D)H₂O
E)CO₂

Question 32

Identify the fourth-row element X that forms the following  ion:
​

A)Ge
B)As
C)Se
D)Kr
E)Br

Question 33

Which of these molecules contains a triple bond?

A)NH₃
B)OCl₂
C)C₂H₂
D)H₂O
E)MgO

Question 34

Identify the third-row element X which forms the following  compound:
​

A)S
B)Cl
C)P
D)Si
E)Al

Question 35

What is the molecular geometry of NH₃?

A)Tetrahedral
B)Bent
C)Trigonal pyramidal
D)Trigonal planar
E)Linear

Question 36

How many lone pairs of electrons are around the central atom in H₂O?

A)0
B)1
C)2
D)3
E)4

Question 37

How many bonding pairs of electrons are around the central atom in HCN?

A)0
B)1
C)2
D)3
E)4

Question 38

The molecular geometry of a two atom molecule:

A)is always bent.
B)is always tetrahedral.
C)is always linear.
D)depends on the atoms involved.

Question 39

Which of these molecules will have a tetrahedral molecular geometry?

A)NH₃
B)N₂O
C)C₂H₂
D)CH₃Cl
E)MgO

Question 40

How many lone pairs of electrons are around the central atom in SO₂?

A)0
B)1
C)2
D)3
E)4

Question 41

Which of these molecules will have a linear electron geometry and a trigonal pyramidal molecular geometry?

A)PCl₃
B)H₂O
C)C₂H₂
D)CH₃Cl
E)None of these.

Question 42

Which of these molecules will have a trigonal planar electron geometry and a bent molecular geometry?

A)PCl₃
B)H₂O
C)C₂H₂
D)CH₃Cl
E)SO₂

Question 43

Which of these molecules will have a tetrahedral electron geometry and a bent molecular geometry?

A)PCl₃
B)H₂O
C)C₂H₂
D)CH₃Cl
E)SO₂

Question 44

What is the molecular geometry of NH₄⁺?

A)Trigonal planar
B)Tetrahedral
C)Trigonal pyramidal
D)Bent

Question 45

Which of these would be expected to have a linear molecular geometry?

A)I and II
B)II and IV
C)I, II, and IV
D)I, and III
E)IV only

Question 46

Which of these is the correct molecular geometry of BF₃?

A)Linear
B)Trigonal planar
C)Tetrahedral
D)Trigonal pyramidal
E)Bent

Question 47

Which of these is the correct molecular geometry of CO₂?

A)Linear
B)Trigonal planar
C)Tetrahedral
D)Trigonal pyramidal
E)Bent

Question 48

Which of these is the correct molecular geometry of PCl₃?

A)Linear
B)Trigonal planar
C)Tetrahedral
D)Trigonal pyramidal
E)Bent

Question 49

Which of these is the correct molecular geometry of SO₂?

A)Linear
B)Trigonal planar
C)Tetrahedral
D)Trigonal pyramidal
E)Bent

Question 50

Which of these molecules will have a linear electron geometry and a linear molecular geometry?

A)PCl₃
B)H₂O
C)CO
D)CH₃Cl
E)BF₃

Question 51

Which of these molecules will have a trigonal pyramidal molecular geometry?

A)PCl₃
B)N₂O
C)C₂H₂
D)CH₃Cl
E)SO₂

Question 52

Which of these would be expected to have a trigonal planar electron geometry?

A)I and II
B)II and III
C)I, II, and III
D)I and III
E)I only

Question 53

Electronegativity is:

A)the ability of an atom to form positively charged ions.
B)the ability of an atom to form negatively charged ions.
C)also called a dipole
D)the ability of an atom to attract bonding electrons.
E)the ability of an atom to form polar molecules.

Question 54

Which of these theories is utilized in the prediction of molecular polarity?

A)Dalton's Theory
B)VSEPR Theory
C)Electronegativity
D)Einstein's Relativity Theory
E)Both B and C

Question 55

Which of these is the correct molecular geometry of CCl₄?

A)Linear
B)Trigonal planar
C)Tetrahedral
D)Trigonal pyramidal
E)Bent

Question 56

Which of the following results in bent molecular geometry?

A)4 bonding groups and no lone pair on the central atom
B)2 bonding groups and 1 lone pair on the central atom
C)2 bonding groups and 2 lone pairs on the central atom
D)Both B and C
E)Both A and C

Question 57

A molecule with tetrahedral electron geometry could have which of the following molecular geometry?

A)Tetrahedral
B)Trigonal pyramidal
C)Bent
D)All of the above

Question 58

Which of these molecules will have a tetrahedral electron geometry and a tetrahedral molecular geometry?

A)PCl₃
B)H₂O
C)C₂H₂
D)CH₃Cl
E)SO₂

Question 59

The element with the highest electronegativity is _________.

A)fluorine
B)hydrogen
C)helium
D)neon

Question 60

Which of these molecules will have a tetrahedral electron geometry and a trigonal pyramidal molecular geometry?

A)PCl₃
B)H₂O
C)C₂H₂
D)CH₃Cl
E)SO₂

Question 61

The [NO₂] ⁻  molecule has ____ double bond(s), ____ single bond(s), ____ lone (nonbonding)pair(s)of electrons, and ____ resonance forms.

A)2, 0, 8, 2
B)1, 1, 8, 3
C)1, 1, 6, 2
D)0, 2, 10, 0
E)2, 0, 12, 2

Question 62

Of the bonds below, the most polar bond would be:

A)C − C
B)C − N
C)C − O
D)C − F

Question 63

Water:

A)is a polar molecule.
B)has tetrahedral electron geometry.
C)has bent molecular geometry.
D)has two lone pairs of electrons on the central atom.
E)All of the above.

Question 64

A nonpolar bond would most likely result when:

A)a metal bonds to a nonmetal.
B)a nonmetal bonds to a metal.
C)two identical nonmetal atoms bond.
D)an atom bonds to hydrogen.

Question 65

Which of these is\are polar molecule(s)?
I. PCl₃
II. H₂O
III. CO₂
IV. BF₃

A)I only
B)I and II
C)I, II, and IV
D)II only
E)II and IV

Question 66

Which of these is a nonpolar molecule?

A)CO
B)H₂O
C)O₃
D)PCl₃
E)SO₃

Question 67

Element A has an electronegativity of 0.8 and element B has an electronegativity of 2.0. Which statement best describes the bonding in A₃B?

A)The AB bond is largely covalent with a δ⁻ on A.
B)The AB bond is largely covalent with a δ ⁺ on A.
C)The compound is largely ionic with no polar bonds.
D)The compound is largely covalent with no polar bonds.
E)There is insufficient information.

Question 68

Which of these elements has the lowest electronegativity?

A)Ca
B)N
C)Se
D)P
E)O

Question 69

List the elements Na, K, Al, Cl, Cs in order of increasing electronegativity (from least to greatest).

A)Na < Cs < Al < K < Cl
B)Cs < Na < K < Cl < Al
C)Cl < Na < Al < K < Cs
D)Cl < Al < Na < K < Cs
E)Cs < K < Na < Al < Cl

Question 70

Which of the following molecules is nonpolar?

A)CO₂
B)N₂
C)CH₄
D)CCl₄
E)All of the above.

Question 71

Which of these elements has the highest electronegativity?

A)Ca
B)N
C)Se
D)P
E)O

Question 72

Which of these is\are polar molecule(s)with a tetrahedral electron geometry?
I. NCl₃
II. H₂O
III. CH₃Cl
IV. SiH₄

A)I only
B)I and III
C)I, II, and III
D)III only
E)II and III

Question 73

Which of these contain(s)polar bonds but is\are nonpolar molecule(s)?
I. NCl₃
II. H₂
III. CO₂
IV. BF₃

A)I only
B)I and III
C)III and IV
D)III only
E)I, III, and IV

Question 74

List the elements Na, K, Al, Cl, Cs in order of decreasing electronegativity (from greatest to least).

A)Na > Cl > Al > K > Cs
B)Cs > Na > K > Cl > Al
C)Cl > Na > Al > K > Cs
D)Cl > Al > Na > K > Cs
E)Na > Cs > K > Al > Cl