D and F Block Elements Test

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D and F Block Elements Test - 20

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Weekly Quiz Competition

Question 1
4 / -1

Due to lanthanide contraction

A
Fe, Co, Ni have equal size

B
Zr and Hf have equal size

C
all f-block ions have equal size

D
all isoelectric ions have equal size
Question 2
4 / -1

The lanthanoid which exhibits + 4 oxidation

A
Pm

B
Sm

C
Ce

D
Gd
Question 3
4 / -1

What elements are present in f-block series?

A
Lanthanoids

B
Actinoids

C
Lanthanoids and actinoids

D
Lipids
Question 4
4 / -1

What are lanthanides and actinides?

A
Inner-transition element

B
Noble gas

C
Normal element

D
Transition element
Question 5
4 / -1

In context of the lanthanoids, which of the following statements is not correct ?

A
There is a gradual decrease in the radius of the members with increasing atomic number in the series

B
All the members exhibit +3 oxidation state

C
Because of similar properties the separation of lanthanoids is not easy

D
Availability of 4f-electrons results in the formation of compounds in + 4 state for all members of the series
Question 6
4 / -1

Which lanthanide compound is used as a pigment?

A
CeO₂

B
Ce(OH)₃

C
Lu(OH)₃

D
Tb(OH)₃
Question 7
4 / -1

The point of dissimilarity between lanthanides and actinides is

A
three outermost shells are partially filled

B
they show oxidation state of + 3 (common)

C
they are called inner-transition elements

D
their are radioactive in nature
Question 8
4 / -1

Most common oxidation states of Ce (cerium) are

A
+3, +4

B
+2, +3

C
+2, +4

D
+3, +5
Question 9
4 / -1

The most stable oxidation state of lanthanides is

A
+ 2

B
+ 4

C
0

D
+ 3
Question 10
4 / -1

Which of the following has got incompletely filled f-subshell '?

A
Gadolinium

B
Lutetium

C
Lawrencium

D
Tantalum

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D and F Block Elements Test - 20

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D and F Block Elements Test - 20

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Question 1

Fe, Co, Ni have equal size

Zr and Hf have equal size

all f-block ions have equal size

all isoelectric ions have equal size

Question 2

Pm

Sm

Ce

Gd

Question 3

Lanthanoids

Actinoids

Lanthanoids and actinoids

Lipids

Question 4

Inner-transition element

Noble gas

Normal element

Transition element

Question 5

There is a gradual decrease in the radius of the members with increasing atomic number in the series

All the members exhibit +3 oxidation state

Because of similar properties the separation of lanthanoids is not easy

Availability of 4f-electrons results in the formation of compounds in + 4 state for all members of the series

Question 6

CeO2

Ce(OH)3

Lu(OH)3

Tb(OH)3

Question 7

three outermost shells are partially filled

they show oxidation state of + 3 (common)

they are called inner-transition elements

their are radioactive in nature

Question 8

+3, +4

+2, +3

+2, +4

+3, +5

Question 9

+ 2

+ 4

0

+ 3

Question 10

Gadolinium

Lutetium

Lawrencium

Tantalum

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CeO₂

Ce(OH)₃

Lu(OH)₃

Tb(OH)₃