Use with textbook pages 64–67.
Use the periodic table on
answer questions 8 to 12.
The
periodic table and
SCIENCE 9 – BOHR MODELS WORKSHEET
atomic theory
8. How many electrons are
shell of a sulphur (S) ato
NAME:
A. 1
Use the following Bohr model to answer
questions 1 to 6.
Use the following Bohr model to answer questions 1 to 3
B. 2
C. 6
D. 7
9. How many electrons are
shell of a fluorine (F) ion
A. 1
B. 2
1) Match each Term on the left with the corresponding Number on the right. Each number
C. 7 may be
Match
the
Term
on
the
left
with
the
corresponding
used more than once. Refer to the diagram above.
Number on the right. Each Number may be used
D. 8
more than once. Refer to the diagram above.
10.Number
How many shells are the
Term
Term
Number
model of an aluminum (A
Number of shells
1.
number of
A. 0
shells
B. 1
2.
number of
C. 2
Number of protons
protons
D. 3
total number of E. 4
Total number3.of electrons
electrons
F. 19
4.
number of
G. 20
Number of valence electrons
valence electrons
5.
number of
Number of shells
holding itthe
maximum
electron(s)
has
to lose number of electrons
to become stable
Number of electron(s)
is
has tooflose to become stable
6.
number
shells holding the
maximum number of
2) What is the Bohr modelelectrons
electron configuration for the above atom?
A.
1 A. 1
B.
2
C.
3 D. 4
B. 2
C. 3
D. 11.4 Which of the following r
model electron arrangem
(Cl) atom?
E.
19
F.
20B. 2, 2, 13
A. 2, 15
C. 2, 8, 7
D. 2, 8, 8
12. What do a beryllium (Be
(Ne) atom have in comm
3) What is the identity of the above atom?
Circle the letter of the best answer.
4) What is the maximum7.number
that thenumber
first electron
shell can hold?
What of
is electrons
the maximum
of electrons
A. They have full outer s
that the first electron shell can hold?
B. They have the same n
6) How many shells are there in the Bohr model of a hydrogen atom?
A. 1
C. They have the same n
shells.
7) How many valence electrons are there in a fluorine atom?
D. None of the above
5) How many electrons are in the outermost shell of a sulphur atom?
B. 2
C. 4
8) How many shells are there
D. in
8 the Bohr model of a silicon atom?
© 2007 McGraw-Hill Ryerson Limited
Section 2.3
The Periodic Table and Atomi
(c) number of electrons
(e) Bohr model of
a nitrogen atom
(d) number of valence electrons
(e) Bohr model of
(a) model
number
of protons
9) Fill
diagram.
2. in the blanks beside each Bohr
a)2.
C
C
(b)
(a)
(c)
(b)
(d)
(c)
(e)
(d)
a nitrogen atom
number of shells
number of protons
number of electrons
number of shells
number of valence electrons
number of electrons
Bohr model of a
number of valence electrons
(e) Bohr model of a
(a) number of protons
b)3.
(b) number of shells
(a) number of protons
(c) number of electrons
(b) number of shells
O
(d) number of valence electrons
(c) number of electrons
(e)
Bohr
model
of an
10) Draw Bohr diagrams for the following.
Make
sure
you
show the
correct number of neutrons
(d) number
of valence
electrons
3.
O
found in the nucleus. Write the electron configuration for each Bohr diagram.
(e) number
Bohr model
of an
(a)
of protons
27
4.
(a) 39K
(b) Al
(b) number of shells
Ne
4.
(a) number of protons
(c) number of electrons
(b) number of shells
(d) number of valence electrons
Ne
(c) number of electrons
(e) Bohr model of a
(d) number of valence electrons
5. The four elements above
are inmodel
the same
(e) Bohr
of a period. What do you notice about the
number of shells for elements belonging to the same period?
5. The four elements above are in the same period. What do you notice about the
number of shells for elements belonging to the same period?
(c) 11B
(d) 7Li
36
MHR • Section 2.3
The Periodic Table and Atomic Theory
36
MHR • Section 2.3
The Periodic Table and Atomic Theory
© 2007 McGraw-Hill Ryerson L
© 2007 McGraw-Hill Ryerson