Home
Class 12
CHEMISTRY
The f-block elements of the periodic tab...

The `f`-block elements of the periodic table contains those element in which

A

Only `4f` orbitals are progressively filled in 6th period.

B

only `5f` orbtials are progressively filled in 7th period.

C

`4f` and `5f` orbitals are progressively filled in 6th and 7th periods respectively.

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
Electronic configuration of `f`-block element `(n - 2) f^(1-14)`,
`(n - 1) d^(10) , ns^(2) f`-block starts with 6th period `(n = 6)`.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • THE D AND F BLOCK ELEMENTS

    A2Z|Exercise Section B - Assertion Reasoning|42 Videos

  • THE D AND F BLOCK ELEMENTS

    A2Z|Exercise AIPMT/NEET Questions|31 Videos

  • THE D AND F BLOCK ELEMENTS

    A2Z|Exercise KMnO_4 And K_2Cr_2O_55|1 Videos

  • SURFACE CHEMISTRY

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

Densest element of the periodic table is

The elements of a group in the periodic table

Knowledge Check

  • The f-block of the periodic table contains those elements in which :

    A
    Only `4f` orbitals are progressively filled in 6th period.
    B
    Only `5f` orbitals are progressively filled in 7th period.
    C
    4f and 5f orbitals are progressively filled in 6th and 7th periods respectively.
    D
    None

  • The f-block of the periodic table contains those elements in which :

    A
    Only `4f` orbitals are progressively filled in 6th period.
    B
    Only `5f` orbitals are progressively filled in 7th period.
    C
    4f and 5f orbitals are progressively filled in 6th and 7th periods respectively.
    D
    None

  • The s- block elements of the periodic table are those in which the last elctron enters the s-subshell of the____ shell.

    A
    penultimate
    B
    antepenultimate
    C
    outermost
    D
    foremost

    • Similar Questions

    Explore conceptually related problems

    The lightest element in the periodic table is

    The lightest element in the periodic table is

    Which block of the periodic table contains only metals?

    All the s - block elements of the periodic table and placed in the groups

    All the s-block elements of the periodic table are placed in the group…..

    Home
    Profile