Section 7.3
Properties of d-Block and f-Block Elements
Practice Test
1.
The fewer unpaired electrons in the d sublevel of a transition metal, the __________.
a.
greater the hardness
b.
higher the boiling point
c.
higher the melting pointq
d.
lower the boiling point
Hint
2.
For which trace element in the table is the recommended daily allowance lowest?
Supplement Contents
Per Tablet
Element
Amount
% DV
Calcium
161 mg
16%
Chromium
25 µg
20%
Copper
2 mg
100%
Iodine
150 µg
100%
Manganese
2.5 mg
125%
Magnesium
100 mg
25%
Molybdenum
25 µg
33%
Phosphorus
09 mg
111%
Potassium
40 mg
1%
Selenium
20 µg
28%
Zinc
15 mg
100%
a.
calcium
b.
copper
c.
molybdenum
d.
selenium
Hint
3.
Which of the following was the first trace element shown to be essential to human nutrition?
a.
aluminum
b.
zinc
c.
iron
d.
nickel
Hint
4.
Which one of the following d-block elements would most likely have colored compounds?
a.
titanium
b.
zinc
c.
vanadium
d.
scandium
Hint
5.
The chloride of ____________ is colorless.
a.
Cr
3+
b.
Co
2+
c.
Cu
2+
d.
Ca
2+
Hint
6.
Many transition metals are valued in manufacturing because these metals ________.
a.
are strong and malleable
b.
are brittle
c.
are non-conductors
d.
are volatile
Hint
7.
Which one of the following elements is unreactive enough to be found uncombined in nature?
a.
calcium
b.
aluminum
c.
gold
d.
iron
Hint
8.
The majority of actinide elements are known as _________.
a.
halogen elements
b.
coinage metals
c.
lanthanide elements
d.
transuranium elements
Hint
