Deck 3: Compounds and Chemical Bonding: Bringing Atoms Together

Question 1

A double bond comprises which of the following orbitals?

A) one pi orbital
B) two sigma orbitals
C) two pi orbitals
D) two sigma orbitals and one pi orbital
E) one sigma orbital and one pi orbital

Answer 1

E

Question 2

A triple bond comprises which of the following orbitals?

A) one sigma orbital and one pi orbital
B) two pi orbitals
C) two sigma orbitals
D) one sigma orbital and two pi orbitals
E) two sigma orbitals and one pi orbital

Answer 2

D

Question 3

Which of the following best describes a coordinate bond?

A) A highly-polarized covalent bond.
B) A bond comprising only one valence electron.
C) A bond containing two valence electrons, both of which have been donated by the same atom.
D) A bond containing two valence electrons, one donated from each of the atoms joined by the bond.
E) A bond that is stronger than a 'regular' covalent bond.

Answer 3

C

Question 4

Which of the following is a noble gas configuration?

A) 1s² 2s²
B) 1s² 2s² 2p⁴
C) 1p²2p²2p⁶3s² 3p⁶
D) 1s² 2s² 2p⁶ 3s¹
E) 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹

Question 5

Carbon has a valency of four. Which of the following are correct deductions based on this information? Select all that apply.

A) Carbon needs to share two pairs of valence electrons to achieve a full valence shell.
B) Carbon needs to share four pairs of valence electrons to achieve a full valence shell.
C) One atom of carbon can form four single covalent bonds.
D) One atom of carbon can form one double bond and two single bonds.
E) One atom of carbon can form two single bonds and two double bonds.

Question 6

Which of the following carry zero charge overall? Select all that apply.

A) An ionic compound
B) A polyatomic ionic compound
C) A covalent compound
D) A molecule
E) An ion

Question 7

Two atomic orbitals will overlap to form how many molecular orbitals?

A) One
B) Two
C) Four

Question 8

Which of the following statements are true? Select all that apply.

A) The overlap of two atomic orbitals generates two bonding orbitals and two anti-bonding orbitals.
B) Electrons in anti-bonding orbitals inhibit covalent bond formation.
C) Electrons in bonding orbitals favour covalent bond formation.
D) More electrons must occupy a molecule's anti-bonding orbitals than its bonding orbitals for covalent bonding to occur.
E) A non-bonding orbital does not contribute to covalent bonding.

Question 9

A full valence shell (except shell 1) is considered to be occupied by how many electrons?

A) 2
B) 8
C) 10
D) 18
E) 24

Question 10

Match the movement of electrons with the type of bonding associated with it.
-Electrons shared equally between two atoms

A) Covalent bonding
B) Ionic bonding
C) No bonding

Question 11

Match the movement of electrons with the type of bonding associated with it.
-Electrons fully transferred from one atom to another

A) Covalent bonding
B) Ionic bonding
C) No bonding

Question 12

Match the movement of electrons with the type of bonding associated with it.
-Electrons not transferred from one atom to another

A) Covalent bonding
B) Ionic bonding
C) No bonding

Question 13

Atoms of elements that are unable to undergo chemical bonding are called which of the following?

A) Volatile
B) Inert
C) Conjugated
D) Metallic
E) Radioactive

Question 14

Which of the following statements about delocalized electrons are true? Select all that apply.

A) Delocalized electrons are valence electrons that are shared between more than one pair of atoms.
B) Delocalized electrons occupy extended sigma orbitals.
C) Delocalized electrons are a characteristic feature of aromatic compounds.
D) Delocalized electrons are found only in cyclic compounds.

Question 15

Which of the following elements has the highest electronegativity?

A) Oxygen
B) Sodium
C) Carbon
D) Hydrogen
E) Sulfur

Question 16

Match an element's electronegativity value with the strength with which the element attracts an electron.
-High electronegativity value

A) Electron strongly attracted
B) Electron weakly attracted

Question 17

Match an element's electronegativity value with the strength with which the element attracts an electron.
-Low electronegativity value

A) Electron strongly attracted
B) Electron weakly attracted

Question 18

Match the difference in electronegativity between the atoms of two elements with the type of bonding the atoms are most likely to undergo.
-Large difference in electronegativity

A) Ionic bonding
B) Covalent bonding

Question 19

Match the difference in electronegativity between the atoms of two elements with the type of bonding the atoms are most likely to undergo.
-Small difference in electronegativity

A) Ionic bonding
B) Covalent bonding

Question 20

Which of the following are non-polar bonds? Select all that apply.

A) C-H
B) C=C
C) C-C
D) C-O
E) C=O

Question 21

Rank the following bonds in order of the extent of their polarization, with 1 being the least polarized, and 4 being the most polarized.