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d and f block elements

Total questions: 14

Worksheet time: 5mins

Name
Class
Date
1.

Which block of elements are known as transition elements?

a)

s block

b)

p block

c)

d block

d)

f block

2.

Electronic configuration of d- block element is

a)

n d 1-10 ns 1

b)

(n-2) d 1-10 ns 1-2

c)

(n-1) d 1-10 ns 1-2

d)

(n-1) d 1-6 ns 1-2

3.

The transition elements are those elements which have ........ in their ground state or in any one of

their oxidation states.

a)

completely filled (partly filled) d-subshell

b)

incompletely filled (partly filled) d-subshell

c)

empty d subshell

d)

None of these

4.

The d-block Elements consists of how many rows ?

a)

2

b)

3

c)

4

d)

5

5.

Each rows of d-block elements has ........elements.

a)

5

b)

8

c)

9

d)

10

6.

First transition series is also known as

a)

3 d series

b)

4 d series

c)

5 d series

d)

None of these

7.

The magnetic moment of Mn2+ is

a)

4.5

b)

5.0

c)

5.9

d)

2.3

8.

Anomalous electronic configuration in the 3d series are of

a)

Cr and Fe

b)

Cu and Zn

c)

Fe and Cu

d)

Cr and Cu

9.

Transistion elements form alloys easily because they have

a)

Same atomic number

b)

Same electronic configuration

c)

Nearly same atomic size

d)

None of the above

10.

The property which is not characteristic of transistion metals is

a)

variable oxidation states.

b)

tendency to form complexes.

c)

formation of coloured compounds.

d)

natural radioactivity.

11.

Which of the following has the maximum number of unpaired electrons?

a)

Cu2+

b)

Ti3+

c)

V3+

d)

Fe2+

12.

Which of the transition element exhibit only one oxidation state?

a)

Mn

b)

Cu

c)

Sc

d)

Ti

13.
Which compound contains Cu2+?
a)
Compound A - blue solid
b)
Compound B - brown solid
c)
Compound C - green solid
d)
Compound D - white solid
14.

Reason for lanthanoid contraction is

a)

Very poor shielding effect of f orbital

b)

decrease in nuclear charge

c)

Increase in nuclear charge

d)

Increase in shielding effect