Chemistry Exam Worksheets With Answers - Chemistry 11, Exam Ii - 2006 Page 2
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12I.
Atomic and Periodic Properties: Newly Synthesized Element 118 (20 points)
1. The synthesis of element 118 was reported recently by a collaborative team of 30 scientists
from the US and Russia (Physical Review C, October 2006.)
a. Write down the ground state electron configuration for the newly synthesized
element. Use the abbreviation scheme in which inner core electrons are represented
uisng the appropriate noble gas…for example, the electron configuration for Li is
1
[He]2s
.
2
14
10
6
[Rn] 7s
5f
6d
7p
b. To which period (row) and group (column) do this new element belong?
Row 7 ; Group 18 ; Noble Gases
2. Order the elements (some have yet to be synthesized) with the following atomic numbers
115, 116, 117, 118, 119, 120 from SMALLEST to LARGEST……………..
a. Atomic radii
118, 117, 116, 115, 120, 119
b. Ionization energy
119, 120, 115, 116, 117, 118
c. Magnetic spin: (number of unpaired electrons)
118 = 120 ; 119 = 117 ; 116, 115
-3
-2
-1
+
+2
3. Elements 115
, 116
, 117
, 118, 119
, and 120
are isoelectronic. Arrange these
elements from SMALLEST to LARGEST………….
a. Atomic or ionic radii
2+
1+
1-
2-
3-
120
, 119
, 118, 117
, 116
, 115
b. Ionization energy
3-
2-
1-
1+
2+
115
, 116
, 117
, 118, 119
, 120
c. Electron Affinity (arrange from most negative to most positive)
2+
1+
1-
2-
3-
120
, 119
, 118, 117
, 116
, 115
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