Download Sample Exam 3 - General Chemistry I | CHEM 1010 and more Exams Chemistry in PDF only on Docsity!
You should study your test, study your Handbook modules, and review your drill quizzes BEFORE taking this exam.
When taking it you should do so under exam conditions, i.e. alone, using only a calculator and periodic table, and
waiting until you have completely finished before checking your answers.
1: Which of the following is the best Lewis structure for HSO 4
? (8A-5,7,9,10)
A:
[
O = = O
O
S
O
H
[
D:
O = O
O
S
O
H
[ [
E:
[ [
O O
O
S
O
H
B:
O = O
O
S
O
H
[ [
↕
O O
O
S
O
H
[ [
↕
O O
O
S
O
H
[ [
C:
S
[
[
↕
O = O
O
S
O
H
[
O O
O
S
O
H
[
[
↕
O = O
O
O
H
[
2: K-TYPE answer format: Mark a if A,B,C are correct; b if A, C; c if B, D; d if D only; e otherwise.
A: When an electron in an atom moves from the n = 2 to the n = 1 level, it gains energy. (7A-6)
B: An electron in a 3 p orbital would be closer to the nucleus than one in a 2 p orbital. (7A-6)
C: An electron in a 4 d orbital has less energy than one in a 2 s orbital. (7A-6)
D: The principal quantum number n is related to the electron's energy. (7A-8)
3: Choose the correct statements from the following concerning NO
and NO
using K-TYPE answer format :
Mark a if A,B,C are correct; b if A, C; c if B, D; d if D only; e otherwise. (8A-6)
A: The bond in NO
is stronger than that in NO
B: The bond in NO
is shorter than that in NO
C: There is a double bond in NO
D: There is a single bond in NO
You should study your test, study your Handbook modules, and review your drill quizzes BEFORE taking this exam.
When taking it you should do so under exam conditions, i.e. alone, using only a calculator and periodic table, and
waiting until you have completely finished before checking your answers.
4: Which of the following is the best Lewis structure of H 2
CO? (8A-4,5,7,9,10)
A:
H C H
O
B:
H C H
O
C:
H C H
O
D:
H C H
O
E:
H C H
O
5: K-TYPE answer format: Mark a if A,B,C are correct; b if A, C; c if B, D; d if D only; e otherwise. (8A-8)
A: The electronegativity of P is greater than that of Cl.
B: The electronegativity of Te is greater than that of S.
C: Electronegativity is defined to be the energy released when an atom acquires an electron.
D: The formal charge of N in NH 4
is +1.
6: What is the correct electronic configuration of Te? (7A-10, 7B-1,2)
A: 1s
2s
2p
3s
3p
4s
3d
4p
5s
4d
B: 1s
2s
2p
3s
3p
4s
3d
4p
5s
4d
5p
C: 1s
2s
2p
3s
3p
4s
3d
4p
4d
5p
D: 1s
2s
2p
3s
3p
4s
3d
4p
5s
4d
5p
E: 1s
2s
2p
3s
3p
4s
3d
4p
5s
4d
4f
7: K-TYPE answer format : Mark a if A,B,C are correct; b if A, C; c if B, D; d if D only; e otherwise.
A: A bond formed by the attraction between positively and negatively charged ions is called a covalent bond.
(8A-2)
B: If sodium and chlorine were to react, the compound which forms would probably be ionic. (8A-2)
C: Ionic substances tend to have low melting points. (8A-2)
D: The formula of the compound which would probably form if barium reacted with oxygen would be BaO.
(8A-3)
You should study your test, study your Handbook modules, and review your drill quizzes BEFORE taking this exam.
When taking it you should do so under exam conditions, i.e. alone, using only a calculator and periodic table, and
waiting until you have completely finished before checking your answers.
12: Which of the following corresponds to the correct electronic configuration of In
? (7A-10, 7B-1,2)
A: 1s
2s
2p
3s
3p
4s
3d
4p
5s
4d
B: 1s
2s
2p
3s
3p
4s
3d
4p
5s
4d
C: 1s
2s
2p
3s
3p
4s
3d
4p
5s
4d
5p
D: 1s
2s
2p
3s
3p
4s
3d
4p
4d
E: 1s
2s
2p
3s
3p
4s
3d
4p
5s
4d
5p
13: (CHALLENGE) The energy of an electron in a one-electron system can be calculated using the equation
E
Z
n
ergs
n
11 2
2
where E n
= energy of the electron if in the n level
Z = charge on the nucleus of the species
n = level in which the electron exists.
Which of the following correctly states the relationship between the n = 2 level of a H atom (in which Z = 1) and the
n = 2 level of a He
ion (in which Z = 2)? (7A-Challenge)
A: E E
H He
B: E E
H He
C: E E
H He
D: E E
H He
E: E E
H He
14: (CHALLENGE) In the laboratory last week, an energetic young student collected the following data concerning
elements X1, X2, X3, X4, and X5.
IONIZATION ENERGY DATA: X5 has a greater ionizational energy than X4.
X3 has a greater ionizational energy than X4, X1, and X2.
ATOMIC RADIUS DATA: X2 is much larger than X3.
X1 is slightly larger than X4 which in turn is much larger than X5.
On the basis of this data COMBINED, which of the following best represents the relative relationship of the elements
within the periodic table.
A: X3 X5 X
X2 X
B: X4 X
X3 X1 X
C: X4 X
X1 X
X
D: X2 X
X4 X
X
E: X
X1 X4 X
X
You should study your test, study your Handbook modules, and review your drill quizzes BEFORE taking this exam.
When taking it you should do so under exam conditions, i.e. alone, using only a calculator and periodic table, and
waiting until you have completely finished before checking your answers.
15: K-TYPE answer format : Mark a if A,B,C are correct; b if A, C; c if B, D; d if D only; e otherwise.
A: A sulfur atom would be diamagnetic in the ground state. (7B-3)
B: Two elements with atomic numbers of 16 and 17 would tend to have similar chemical properties. (7B-4)
C: S
and Se
are isoelectronic. (7B-7)
D: An atom with all electrons paired would be diamagnetic. (7B-3)
16: K-TYPE answer format : Mark a if A,B,C are correct; b if A, C; c if B, D; d if D only; e otherwise.
A: The energy of light is inversely proportional to its wavelength. (7A-4)
B: Electrons behave as both waves and particles. (7A-7)
C: The typical atom can emit only certain types of energy if excited. (7A-5)
D: Infrared radiation has higher energy than does gamma rays. (7A-4)
