Question 1
Which one of the following statements concerning the length of carbon-carbon single, double, and triple covalent bonds is true?
a) The carbon-carbon single bond is shorter than either the carbon-carbon double or triple bond.
b) The carbon-carbon double bond is shorter than either the carbon-carbon single or triple bond.
c) The carbon-carbon triple bond is shorter than either the carbon-carbon single or double bond.
d) The carbon-carbon single, double, and triple bonds all have the same length.
Question 2
Which one of the following is the correct bond angle between atoms adopting a trigonal planar geometry?
a) 180°
b) 109.5°
c) 90°
d) 120°
Question 3
The atoms in a molecule of water adopt what kind of geometry?
a) Linear
b) Tetrahedral
c) Octahedral
d) Trigonal planar
Question 4
Ammonia, NH3, adopts a tetrahedral geometry. However, the non-bonding pair on the central nitrogen atom distorts the bond angle away from the expected 109.5°. Which of the following statements correctly describes how the bond angle is distorted?
a) The actual bond angle is reduced: it is less than 109.5°
b) The actual bond angle is increased: it is more than 109.5°
Question 5
About which of the bonds along the backbone of a polypeptide is rotation not possible?
a) 1
b) 2
c) 3
Question 6
sp3 hybridisation involves the hybridisation of how many atomic orbitals?
a) 1
b) 2
c) 3
d) 4
Question 7
Four sp3 hybrid orbitals adopt what kind of geometry?
a) Linear
b) Trigonal planar
c) Octahedral
d) Tetrahedral
Question 8
When applying VSEPR theory to predict molecular shape, which of the following do we not need to take into account?
a) Valence electrons occupying sigma bonding orbitals
b) Valence electrons occupying pi bonding orbitals
c) Valence electrons occupying non-bonding orbitals
Question 9
Which of the following statements regarding the measurement of the atomic radius are correct? Please select all that apply.
a) The atomic radius is measured between atoms of different elements
b) The atomic radius is measured between atoms of the same element
c) The atomic radius is half the distance between the nuclei of two joined atoms
d) The atomic radius is the distance between the nuclei of two joined atoms
e) The atomic radius is only measured between two covalently-bonded atoms
f) The atomic radius can be measured between both covalently- and ionically-bonded atoms
Question 10
From the following possible responses, select those responses that give the combination of bonds that makes up a triple covalent bond.
a) Two sigma bonds
b) One sigma bond
c) Two pi bonds
d) One pi bond
e) Three sigma bonds
Which one of the following statements concerning the length of carbon-carbon single, double, and triple covalent bonds is true?
a) The carbon-carbon single bond is shorter than either the carbon-carbon double or triple bond.
b) The carbon-carbon double bond is shorter than either the carbon-carbon single or triple bond.
c) The carbon-carbon triple bond is shorter than either the carbon-carbon single or double bond.
d) The carbon-carbon single, double, and triple bonds all have the same length.
Question 2
Which one of the following is the correct bond angle between atoms adopting a trigonal planar geometry?
a) 180°
b) 109.5°
c) 90°
d) 120°
Question 3
The atoms in a molecule of water adopt what kind of geometry?
a) Linear
b) Tetrahedral
c) Octahedral
d) Trigonal planar
Question 4
Ammonia, NH3, adopts a tetrahedral geometry. However, the non-bonding pair on the central nitrogen atom distorts the bond angle away from the expected 109.5°. Which of the following statements correctly describes how the bond angle is distorted?
a) The actual bond angle is reduced: it is less than 109.5°
b) The actual bond angle is increased: it is more than 109.5°
Question 5
About which of the bonds along the backbone of a polypeptide is rotation not possible?
a) 1
b) 2
c) 3
Question 6
sp3 hybridisation involves the hybridisation of how many atomic orbitals?
a) 1
b) 2
c) 3
d) 4
Question 7
Four sp3 hybrid orbitals adopt what kind of geometry?
a) Linear
b) Trigonal planar
c) Octahedral
d) Tetrahedral
Question 8
When applying VSEPR theory to predict molecular shape, which of the following do we not need to take into account?
a) Valence electrons occupying sigma bonding orbitals
b) Valence electrons occupying pi bonding orbitals
c) Valence electrons occupying non-bonding orbitals
Question 9
Which of the following statements regarding the measurement of the atomic radius are correct? Please select all that apply.
a) The atomic radius is measured between atoms of different elements
b) The atomic radius is measured between atoms of the same element
c) The atomic radius is half the distance between the nuclei of two joined atoms
d) The atomic radius is the distance between the nuclei of two joined atoms
e) The atomic radius is only measured between two covalently-bonded atoms
f) The atomic radius can be measured between both covalently- and ionically-bonded atoms
Question 10
From the following possible responses, select those responses that give the combination of bonds that makes up a triple covalent bond.
a) Two sigma bonds
b) One sigma bond
c) Two pi bonds
d) One pi bond
e) Three sigma bonds
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