NAME:
CHE 101 SPRING QUARTER 2008
QUIZ 3
This quiz is worth 15 marks the value for each question is as indicated. You have 25
minutes to complete the quiz. Do not open this paper until instructed. You may use
dictionaries, calculators and any data sheets provided by the instructor. Use only the
scratch paper provided by the instructor. Please write your name in pen clearly at the
top of this page. No other materials are to be used. Mobile phones are to be turned off
and placed out of sight. Everything other than this test paper and the materials
described above should be placed inside your bag. Students who cheat will receive
zero for this quiz. Students who cheat more than once will be dropped from the
course. Allowing someone to copy your work is considered cheating. Once you have
completed the quiz remain quietly seated until the instructor collects your paper.
Please be respectful to other students who may still be working. Once instructed to
stop writing close your quiz and cease writing immediately. Attempting this quiz is an
acknowledgement you have read, understood and agreed to abide by the rules
outlined above.
1. True or False: The periodic Law can be stated as: “When all the elements
are arranged in order of increasing atomic number, elements with similar
properties occur at regular intervals”
(1 mark)
True
2. The vertical columns of the periodic table are called what?
(1 mark)
Groups
3. The horizontal rows of the periodic table are called what?
(1 mark)
Periods
4. Identify the group and period to which each of the following elements
belong.
(1 mark)
A) Zr
B) Fe
C) The element with Z = 30
D) Cobalt
A) group IVB period 5, B) group VIIIB period 4, C) group IIB period 4,
D) group VIIIB period 4.
5. A) How many elements are located in the group IA of the periodic table?
B) How many elements are found in period 3 of the periodic table?
C) Write the symbol and name for the noble gas (group VIIIA) belonging to
period 5.
D) Write the symbol for the element belonging to group IIB and period 6.
(1 mark)
A) 7 elements
B) 8 elements
C) Xe, Xenon
D) Hg
6. Identify the following as true or false.
According to the Bohr model of the atom;
A) Electrons move in circular orbits around the nucleus.
B) Electrons move in elliptical orbitals around the nucleus.
C) The highest energy electrons are in orbits closest to the
nucleus.
D) Electrons may only be in orbits at fixed distances from the
nucleus.
(2 marks)
(A) True, (B) False, (C) False, (D) True
7. According to Erwin Schrodinger’s quantum mechanical model of the atom
the location of an electron can be specified using three terms. What are
these terms?
Shell, subshell and atomic orbital.
(1 mark)
8. A) What is the maximum number of electrons a p subshell can contain?
B) Which lies higher in energy a 2s subshell or a 3d subshell?
C) What is the maximum number of electrons a single orbital may contain?
D) How many orbitals does a d subshell contain?
(1 mark)
A) 6 electrons, B) 3d subshell lies higher, C) 2 electrons, D) 5 orbitals
9. Determine the following for the fourth shell (n = 4) of an atom:
A) The number of subshells.
B) The name (or designation) of each subshell.
C) The number of orbitals in each subshell.
D) The maximum number of electrons that can be contained in
each subshell.
E) The maximum number of electrons that can be contained in
the shell.
(1 mark)
(A) 4 subshells, (B) 4s, 4p, 4d, 4f, (C) 4s subshell has 1 orbital, 4p
subshell has three orbitals, 4d subshell has 5 orbitals and 4f subshell
has 7 orbitals.
(D) 4s can contain 2e-, 4p can contain 6e-, 4d can contain 10e- and 4f can
contain 14 e-.
(E) the maximum number of electrons that can be contained in the shell
is 2+6+10+14 = 32 electrons.
10. Write the electron configurations for the following:
A) An atom that contains 7 electrons.
B) An atom that contains 17 electrons.
C) An atom with Z = 14
D) An atom of Ni
(A) 1s22s22p4
(B) 1s22s22p63s23p5
(C) 1s22s22p63s23p2
(D) 1s22s22p63s23p64s23d8
(2 marks)
11. Identify the following statements as either true of false:
A) When “building up” an atom electrons are first placed into
the orbitals with the highest energy.
B) The Pauli exclusion principle states that electrons in the
same orbital always have different spins.
C) The Pauli exclusion principle states that electrons in the
same subshell always have the same spins.
D) There are 16 orbitals in an f subshell
E) In a p subshell there are three orbitals with the same
energy.
F) In a p subshell there are three orbitals with three different
energies.
(A) False, (B) True, (C) False, (D) False, (E) True, (F) False
(3 marks)