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Section 3: Properties of d-Block and f-Block Elements

Properties of d-Block and f-Block Elements

1.

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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 point
D)lower the boiling point
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%
Iodine150 µg 100%
Manganese2.5 mg 125%
Magnesium 100 mg 25%
Molybdenum25 µg 33%
Phosphorus09 mg 111%
Potassium40 mg1%
Selenium20 µg28%
Zinc15 mg100%


A)calcium
B)copper
C)molybdenum
D)selenium
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
4.
Which one of the following d-block elements would most likely have colored compounds?
A)titanium
B)zinc
C)vanadium
D)scandium
5.
The chloride of ____________ is colorless.
A)Cr3+
B)Co2+
C)Cu2+
D)Ca2+
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
7.
Which one of the following elements is unreactive enough to be found uncombined in nature?
A)calcium
B)aluminum
C)gold
D)iron
8.
The majority of actinide elements are known as _________.
A)halogen elements
B)coinage metals
C)lanthanide elements
D)transuranium elements
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