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The s- block elements of the periodic ta...

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

Text Solution

Verified by Experts

The correct Answer is:
C
Last electron, also called differentiating electron, enters the s-orbital of the last shell. Thus their general valence shell electron configuration is `ns^(1//2)`.
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Knowledge Check

  • 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

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

    A
    IA and IIA
    B
    IIIA and IVA
    C
    B sub groups
    D
    VA to VIIA

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

    A
    17 and 18
    B
    15 and 16
    C
    1 and 2
    D
    18

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