Download Exam 5 - Solved 16 Questions of General Chemistry I - Fall 2002 | 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: (CHALLENGE) Suppose the universe were different than it is and that the electron spin quantum number could have
values of +2, +1, +1/2, 0, -1/2, -1, and -2. Assuming that the Pauli Principle still held and that the values of the other
quantum numbers were the same, which atomic numbers would correspond to the "noble gases" (i.e. the elements with
special chemical stability) in this universe?
A: 2, 10, 18, ... B: 7, 28, 63, ... C: 1, 5, 9, ... D: 5, 25, 45, ... E: 7, 35, 63, ...
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: The first ionization energy of Sb is less than that of I.
B: The second ionization energy of P is less than the first ionization energy of P.
C: The first ionization energy of C is greater than that of Sn.
D: The equation Si Þ Si
- IE correctly illustrates first ionization energy.
3: Which of the following is the best Lewis structure of CCl 4
A:
Cl C Cl
Cl
Cl
D:
Cl C Cl
Cl
Cl
B:
Cl Cl
Cl
C
Cl
E:
Cl C Cl
Cl
Cl
C:
C
Cl C Cl
Cl
Cl
×
Cl Cl
Cl
Cl
4: 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 a photon of electromagnetic radiation is directly proportional to its wavelength.
B: After energy is put into an atom, it returns to the lowest possible level by absorbing a continuous spectrum.
C: The frequency of infrared radiation is more than that of ultraviolet radiation.
D: If two electrons are placed in the same orbital, they have the same spin.
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.
5: What is the correct electronic configuration of Zr
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
D: 1s
2s
2p
3s
3p
4s
3d
4p
5s
4d
E: 1s
2s
2p
3s
3p
4s
3d
4p
5s
5d
6: What is the best Lewis structure of SO 3
A:
O = S = O
[ ]
O
D:
O = S = O
[ ]
O
B:
O = O
[ ]
O
S
E:
O S O
[ ]
O
C:
×
O S = O
[ ]
O
O = S O
[ ]
O
×
O S O
[ ]
O
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.
10: 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: An atom with unpaired electrons would be diamagnetic.
B: The elements with atomic numbers 14 and 15 would have similar chemical properties.
C: A Fe atom would be diamagnetic.
D: K
and S
are isoelectronic.
11: What is the correct electronic configuration of Kr?
A: 1s
2s
2p
3s
3p
4s
3d
4p
B: 1s
2s
2p
3s
3p
4s
3d
4p
C: 1s
2s
2p
3s
3p
4s
3d
4p
D: 1s
2s
2p
3s
3p
4s
3d
4p
E: 1s
2s
2p
3s
3p
4s
3d
4p
12: 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: An electron in a 4p orbital has more energy than one in a 3p orbital.
B: An electron in a 4s orbital is farther from the nucleus than one in a 3s orbital.
C: The angular quantum number l is related to the orbital's shape.
D: Energy is released if an electron moves from the n = 2 to n = 5 levels in an atom.
13: Choose the correct statements from the following concerning N 2
and N 2
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.
A: The N atoms are closer together in N 2
than in N 2
B: It would be easier to separate the atoms in N 2
than in N 2
C: There is a triple bond between the nitrogen atoms in N 2
D: There is a single bond between the nitrogen atoms in N 2
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.
14: (CHALLENGE) The energy of an electron in a one-electron system can be calculated using the equation
E
n
− 11
Z
2
n
2
ergs
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 expresses the relationship between the n = 3 and the n = 4 energy levels of a hydrogen
atom?
A: E
3
3 E
4
B: E
3
16 E
4
C: E
3
9 E
4
D: E
3
= E
4
E: E
3
4 E
4
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: K
ion is smaller than a K atom.
B: O atom is smaller than an O
atom.
C: Se atom is smaller than a Ga atom.
D: Sb atom is smaller than a N atom.
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 general electron configuration of Group VA elements is ns
np
B: A 3p orbital can contain a maximum of 2 electrons.
C: An element with an electronic configuration of 1s
2s
2p
would be in the same group as silicon.
D: An iodine atom needs to gain two electrons to have a filled outer shell.
