OUESTIONS
Questions
1
2
What is the n1aximum number of electrons that
can occupy a d sublcvcl?
6
A. c1-
A. 2
B.
B. 5
C. Br-
C. 6
D. F
D. 10
IB, May 2010
Which of the following ele1nents can be
classified as n1ctalloids?
I.
7
I and II only
B
I and III only
C
II and III only
D
I, II, and III
[l]
A gas is evolved.
II. The tcn1pcraturc of the water increases.
III. A clear, colourless solution is formed.
Ill. Tc
A
J(+
What happens when sodium is added to water?
I.
Al
II. Si
3
Which ion has the largest radius?
A. I and II only
B. I and III only
C. II and III only
D. I, II, and III
[l]
IB, November 2009
How n1any valence electrons does selenium
contain?
8
A. 2
Which oxides produce an acidic solution when
added to water?
B. 6
I.
C. 16
II. MgO
D. 34
III. SO 3
P40 10
A. I and II only
4
B. I and III only
Which of the following elen1ents are alkaline
earth n1etals?
I.
C. II and III only
D. I, II, and III
Rb
[l]
IB, May 2010
II. Sr
III. Ba
B. I and III only
Which staten1ent about the ele111ents in group
1 7 is correct?
C. II and III only
A. Br2 will oxidize c1- .
D. I, II, and III
B. F2 has the least tendency Lo be reduced.
A. I and II only
9
C. Cl2 will oxidize I .
5
D. 12 is a stronger oxidizing agent than F 2 •
Which property generally decreases across
period 3?
IB, May 2011
A. Atomic nun1bcr
B. Electronegativity
C. Atomic radius
D. First ionization energy
IB, May 2011
[l]
[l]
PERIODICITY
10 How many of the following oxides are
amphoteric?
12 Describe and explain what you will see if
chlorine gas is bubbled through a solution of:
Na 2 0, MgO, Al 2 0 3, Si0 2
a) potassiun1 iodide
[2)
A. None
b) potassiu111 Ouoride.
[ l]
B. 1
IB, May 2010
c.
2
D. 4
13 The alkali n1etals are found in group 1 of the
periodic table of elements.
11 The periodic table shows the relationship
between electron arrangen1ent and the
properties of elements and is a valuable tool for
n1aking predictions in chen1istry.
a) Identify the property used to arrange the
elen1ents in the periodic table.
[l)
b) Outline two reasons why
electronegativity increases across
period 3 in the periodic table and
one reason why noble gases are not
assigned electronegativity values.
IB, May 2010
a) State the full electron configuration
of I< and its ion, I<.+.
b) Describe what you understand by the
tern1 first ionization energy.
c) State and explain how the first ionization
energies of the alkali n1etals vary going
down group 1.
d) Explain why the ionic radius of I<.+ is
smaller than the aton1ic radius of the
parent aton1, I<.
[3]
e) Suggest why you should never touch
an alkali n1etal with your fingers when
working in the laboratory.