Midterm Exam #1 Mean 75% +- 13%
th
October 5 , 2017 Median 76%
Answer Key
Family/Last Name: _______________________ First Name: _______________________
CHEM 208 Team: _______________________ SUID: _______________________
Signature: _____________________________
INSTRUCTIONS 4. Examination candidates must conduct themselves honestly
and in accordance with established rules for a given
1. You have 50 minutes for this exam. examination, which will be articulated by the examiner or
2. Check that this exam booklet consists of 5 PAGES invigilator prior to the examination commencing. Should
PRINTED ON BOTH SIDES. One page is left dishonest behaviour be observed by the examiner(s) or
intentionally blank in case you need extra space to work on invigilator(s), pleas of accident or forgetfulness shall not be
problems. received.
3. The datasheet and periodic table (last page of this booklet) 5. Examination candidates suspected of any of the following, or
may be removed. any other similar practices, may be immediately dismissed
from the examination by the examiner/invigilator, and may
4. Write all answers on the answer sheet provided. Answer be subject to disciplinary action:
written in this question booklet will not be marked.
speaking or communicating with other examination
5. The only calculator allowed is the Sharp EL-510R. All other candidates, unless otherwise authorized;
calculators/electronic devices will be confiscated.
purposely exposing written papers to the view of other
6. Molecular model kits may be used and may be pre- examination candidates or imaging devices;
assembled.
purposely viewing the written papers of other
examination candidates;
RULES GOVERNING FORMAL EXAMINATIONS using or having visible at the place of writing any books,
1. Each examination candidate must be prepared to produce, papers or other memory aid devices other than those
upon the request of the invigilator or examiner, their authorized by the examiner(s); and,
UBCcard for identification. using or operating electronic devices including but not
2. Examination candidates are not permitted to ask questions of limited to telephones, calculators, computers, or similar
the examiners or invigilators, except in cases of supposed devices other than those authorized by the examiner(s)—
errors or ambiguities in examination questions, illegible or (electronic devices other than those authorized by the
missing material, or the like. examiner(s) must be completely powered down if present
at the place of writing).
3. No examination candidate shall be permitted to enter the
examination room after the expiration of one-half hour from 6. Examination candidates must not destroy or damage any
the scheduled starting time, or to leave during the first half examination material, must hand in all examination papers,
hour of the examination. Should the examination run forty- and must not take any examination material from the
five (45) minutes or less, no examination candidate shall be examination room without permission of the examiner or
permitted to enter the examination room once the invigilator.
examination has begun. 7. Examination candidates must follow any additional
examination rules or directions communicated by the
examiner(s) or invigilator(s).
, October 5, 2017 CHEM 208 Page 2 of 8
Part 1. (16 marks total, 2 mark each)
For each question below, enter the best answer on the separate answer sheet provided. Answers recorded here
will NOT be graded.
1. What is the correct valence electronic configuration for a Ni2+ ion? 99%
a) [Ar]4s23d7
b) [Ar]4s13d7
c) [Ar]4s03d8
d) [Ar]4s23d8
e) [Ar]4s13d9
f) none of the above
2. What is the best way to describe a typical metal-ammine bond? 78%
a) coordinate bonds where both electrons are owned by a formally anionic ammine ligand
b) coordinate bonds where both electrons are owned by a formally neutral ammine ligand
c) coordinate bonds where the electrons are shared by the metal centre and the ammine ligand
d) coordinate bonds where both electrons are owned by the cationic metal centre
e) polar covalent bonds where the electrons are mostly on the metal centre
f) none of the above
3. What is the best way to describe the metal complex [Fe(bpy)2Br2]Br using the covalent bond classification
method?
86%
a) [ML4X2]+
b) [ML2X2]+
c) ML4X3
d) ML2X3
e) MX3
f) MX5
4. For which of the following is it not possible for the metal to be cobalt(III)? 97%
a) [ML6]3+
b) [MX6]3-
c) [ML3X3]+ both are not possible
d) [ML4X2]1-
e) [ML5X]2+
f) none of the above
th
October 5 , 2017 Median 76%
Answer Key
Family/Last Name: _______________________ First Name: _______________________
CHEM 208 Team: _______________________ SUID: _______________________
Signature: _____________________________
INSTRUCTIONS 4. Examination candidates must conduct themselves honestly
and in accordance with established rules for a given
1. You have 50 minutes for this exam. examination, which will be articulated by the examiner or
2. Check that this exam booklet consists of 5 PAGES invigilator prior to the examination commencing. Should
PRINTED ON BOTH SIDES. One page is left dishonest behaviour be observed by the examiner(s) or
intentionally blank in case you need extra space to work on invigilator(s), pleas of accident or forgetfulness shall not be
problems. received.
3. The datasheet and periodic table (last page of this booklet) 5. Examination candidates suspected of any of the following, or
may be removed. any other similar practices, may be immediately dismissed
from the examination by the examiner/invigilator, and may
4. Write all answers on the answer sheet provided. Answer be subject to disciplinary action:
written in this question booklet will not be marked.
speaking or communicating with other examination
5. The only calculator allowed is the Sharp EL-510R. All other candidates, unless otherwise authorized;
calculators/electronic devices will be confiscated.
purposely exposing written papers to the view of other
6. Molecular model kits may be used and may be pre- examination candidates or imaging devices;
assembled.
purposely viewing the written papers of other
examination candidates;
RULES GOVERNING FORMAL EXAMINATIONS using or having visible at the place of writing any books,
1. Each examination candidate must be prepared to produce, papers or other memory aid devices other than those
upon the request of the invigilator or examiner, their authorized by the examiner(s); and,
UBCcard for identification. using or operating electronic devices including but not
2. Examination candidates are not permitted to ask questions of limited to telephones, calculators, computers, or similar
the examiners or invigilators, except in cases of supposed devices other than those authorized by the examiner(s)—
errors or ambiguities in examination questions, illegible or (electronic devices other than those authorized by the
missing material, or the like. examiner(s) must be completely powered down if present
at the place of writing).
3. No examination candidate shall be permitted to enter the
examination room after the expiration of one-half hour from 6. Examination candidates must not destroy or damage any
the scheduled starting time, or to leave during the first half examination material, must hand in all examination papers,
hour of the examination. Should the examination run forty- and must not take any examination material from the
five (45) minutes or less, no examination candidate shall be examination room without permission of the examiner or
permitted to enter the examination room once the invigilator.
examination has begun. 7. Examination candidates must follow any additional
examination rules or directions communicated by the
examiner(s) or invigilator(s).
, October 5, 2017 CHEM 208 Page 2 of 8
Part 1. (16 marks total, 2 mark each)
For each question below, enter the best answer on the separate answer sheet provided. Answers recorded here
will NOT be graded.
1. What is the correct valence electronic configuration for a Ni2+ ion? 99%
a) [Ar]4s23d7
b) [Ar]4s13d7
c) [Ar]4s03d8
d) [Ar]4s23d8
e) [Ar]4s13d9
f) none of the above
2. What is the best way to describe a typical metal-ammine bond? 78%
a) coordinate bonds where both electrons are owned by a formally anionic ammine ligand
b) coordinate bonds where both electrons are owned by a formally neutral ammine ligand
c) coordinate bonds where the electrons are shared by the metal centre and the ammine ligand
d) coordinate bonds where both electrons are owned by the cationic metal centre
e) polar covalent bonds where the electrons are mostly on the metal centre
f) none of the above
3. What is the best way to describe the metal complex [Fe(bpy)2Br2]Br using the covalent bond classification
method?
86%
a) [ML4X2]+
b) [ML2X2]+
c) ML4X3
d) ML2X3
e) MX3
f) MX5
4. For which of the following is it not possible for the metal to be cobalt(III)? 97%
a) [ML6]3+
b) [MX6]3-
c) [ML3X3]+ both are not possible
d) [ML4X2]1-
e) [ML5X]2+
f) none of the above
