d and f-Block Elements Test

Statement Type

Direction (Q. Nos. 12 and 13) This section is based on Statement I and Statement II. Select the correct answer from the codes given below.

Statement I : Actinides show a large number of oxidation state whereas lanthanides show a limited number of oxidation state.

Statement Il : Energy gap between 4f, 5d and 6s subshells is small whereas that between 5f, 6d and 7s subshell is large.

Question 1/13

[Rn] 5f16d17s2

[Rn] 5f26d27s0

[Rn] 5f26d07s2

[Rn] 5f06d27s2

Question 2/13

[Rn] 5f0-146d0-17s2

[Rn] 5f1-14 6d0-147s2

[Rn] 5f0-146d27s2

[Rn] 5f16d27s0

Question 3/13

the 5f-orbitals are more buried than the 4f-orbita!s

there is a similarity between 4f and 5f-orbitals in their angular part of the wave function

the actinides are more reactive than the lanthanides

the 5f-orbitals extend farther from the nucleus than the 4f-orbitals

Question 4/13

All f-block elements belong to 3rd group

Element curium (Z = 96) has 5f7 6d17s2

The actinides tarnish readily in air

4f and 5f-orbitals are equally buried

Question 5/13

Am and Cm

Cm and Bk

Cm and Cf

No and Lr

Question 6/13

are all synthetic elements

include element 104

are highly electropositive and reactive

do not show variable oxidation state

Question 7/13

Curium

Californium

Uranium

Rutherfordium

Question 8/13

U3O8

UF6

UCI4

UO2(NO2)2

Question 9/13

Am

Pu

U

Cm

Question 10/13

Cm (Z = 96)

Lr (Z = 103)

Np (Z = 93)

All of these

Question 11/13

a

b

c

d

Question 12/13

Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement I

Statement I is correct but Statement II is incorrect

Both Statement I and Statement II are correct and Statement II is not the correct explanation of Statement I

Statement II is correct but Statement I is incorrect

Question 13/13

Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement I

Both Statement I and Statement II are correct and Statement II is not the correct explanation of Statement I

Statement I is correct but Statement II is incorrect

Statement II is correct but Statement I is incorrect

[Rn] 5f¹6d¹7s²

[Rn] 5f²6d²7s⁰

[Rn] 5f²6d⁰7s²

[Rn] 5f⁰6d²7s²

[Rn] 5f^0-146d^0-17s²

[Rn] 5f^1-14 6d^0-147s²

[Rn] 5f^0-146d²7s²

[Rn] 5f¹6d²7s⁰

Element curium (Z = 96) has 5f⁷ 6d¹7s²

U₃O₈

UF₆

UO₂(NO₂)₂