D and F Block Elements Test

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D and F Block Elements Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

The highest oxidation state of Cr will be

A
2

B
3

C
4

D
6

Solution

There are 6 electrons in its ultimate and penultimate shell.
Question 2
1 / -0

Which statement is true about the transitional elements

A
They are highly reactive

B
They show variable oxidation states

C
They have low M.P.

D
They are highly electropositive

Solution

They show variable oxidation state due to participation of ns and (n - 1)d electrons.
Question 3
1 / -0

Which is heaviest among the following

A
Iron

B
Copper

C
Gold

D
Silver

Solution

Gold; ([Xe]5d¹⁰6s¹).
Question 4
1 / -0

Transitional elements exhibit variable valencies because they release electrons from the following orbits

A
ns orbit

B
ns and np orbits

C
(n – 1)d and ns orbits

D
(n – 1)d orbit

Solution

(n – 1)d and ns orbits.
Question 5
1 / -0

The tendency towards complex formation is maximum in

A
s - block elements

B
p - block elements

C
d - block elements

D
f - block elements

Solution

d-block elements; because

(i) Small atomic size

(ii) High nuclear charge

(iii) Presence of vacant d-orbitals
Question 6
1 / -0

Which forms coloured salts

A
Metals

B
Non-metals

C
p - block elements

D
Transitional elements

Solution

Transitional elements form coloured salts due to the presence of unpaired electrons in d-orbital.

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Re-Attempt Weekly Quiz Competition

D and F Block Elements Test - 1

Result

D and F Block Elements Test - 1

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Question 1

2

3

4

6

Solution

Question 2

They are highly reactive

They show variable oxidation states

They have low M.P.

They are highly electropositive

Solution

Question 3

Iron

Copper

Gold

Silver

Solution

Question 4

ns orbit

ns and np orbits

(n – 1)d and ns orbits

(n – 1)d orbit

Solution

Question 5

s - block elements

p - block elements

d - block elements

f - block elements

Solution

Question 6

Metals

Non-metals

p - block elements

Transitional elements

Solution

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