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Return to Foundations of Surface Science 1e Student Resources
Chapter 2 Multiple Choice Questions
Quiz Content
*
not completed
.
Which of the following space groups is not a sub-group of the
p6mm
space group?
p2mg
correct
incorrect
p31m
correct
incorrect
p1g
correct
incorrect
p2mm
correct
incorrect
p4
correct
incorrect
*
not completed
.
A certain reconstructed surface conforms to the
c1m
space group. Which of the following space groups could not have been that of the unreconstructed surface?
p2mm
correct
incorrect
p1m
correct
incorrect
p3m1
correct
incorrect
p4gm
correct
incorrect
p6
correct
incorrect
*
not completed
.
The (421) surface of a face-centred cubic crystal has a primitive unit cell (not necessarily the most symmetric primitive unit cell) spanned by the vectors
$\left(a/2\right)\left[\overline{1}12\right]$
and
$\text{a}\left[1\overline{2}0\right]$
(where the vector components are defined relative to the same three orthogonal unit vectors used in defining the surface's Miller indices). What is the nature of its real-space lattice?
Square
correct
incorrect
Oblique
correct
incorrect
Rectangular
correct
incorrect
Rhombic
correct
incorrect
Triangular
correct
incorrect
*
not completed
.
If the metallic radius of a gold atom is 1.44 Å, and if the regular atomic-scale steps on its {311} surface are spaced at a perpendicular distance of 4.78 Å, what is the area of that surface's primitive unit cell?
13.77 Å
^{2}
correct
incorrect
14.61 Å
^{2}
correct
incorrect
17.05 Å
^{2}
correct
incorrect
19.47 Å
^{2}
correct
incorrect
27.53 Å
^{2}
correct
incorrect
*
not completed
.
Given a face-centred cubic crystal, which of these high-index surfaces exhibits a regular array of straight-edged atomic-scale steps in their ideal structure?
{210}
correct
incorrect
{643}
correct
incorrect
{332}
correct
incorrect
{531}
correct
incorrect
{421}
correct
incorrect
*
not completed
.
At its densest single-layer packing on Ni{111}, benzene forms a
$\left(\sqrt{7}\times \sqrt{7}\right)\text{R}{19.1}^{\circ}$
superstructure featuring one molecule per corresponding primitive unit cell. When coadsorbed with carbon monoxide, however, a
$\left(2\sqrt{3}\times 2\sqrt{3}\right)\text{R}{30}^{\circ}$
superstructure is formed instead. What is the most plausible surface coverage of benzene in this latter case?
0.05 ML
correct
incorrect
0.08 ML
correct
incorrect
0.17 ML
correct
incorrect
0.25 ML
correct
incorrect
0.33 ML
correct
incorrect
*
not completed
.
Which of these superstructures (for any given crystalline surface) has the largest primitive surface unit cell?
(2, 1;
$\overline{1}$
, 2)
correct
incorrect
(2, 1; 4, 3)
correct
incorrect
(2, 1; 2, 2)
correct
incorrect
p(2x2)
correct
incorrect
c(2x4)
correct
incorrect
*
not completed
.
Which of these superstructures (for any given crystalline surface) could be represented as c(2×2) in Wood's notation?
(1, 1;
$\overline{1}$
, 1)
correct
incorrect
(2,
$\overline{1}$
;
$\overline{1}$
, 1)
correct
incorrect
(2, 0; 0, 1)
correct
incorrect
(2, 0; 0, 2)
correct
incorrect
(2, 1; 1, 2)
correct
incorrect
*
not completed
.
On the {111} surface of a face-centred cubic crystal, which of these superstructures has a rectangular primitive unit cell?
(4, 0; 1, 4)
correct
incorrect
(4, 2;
$\overline{2}$
, 2)
correct
incorrect
(3, 1;
$\overline{2}$
, 1)
correct
incorrect
(2, 1; 0, 2)
correct
incorrect
(3, 1; 2, 3)
correct
incorrect
*
not completed
.
What is the nature of the reciprocal lattice associated with a rhombic real-space lattice?
Triangular
correct
incorrect
Rectangular
correct
incorrect
Square
correct
incorrect
Rhombic
correct
incorrect
Oblique
correct
incorrect
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