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The third period (n = 3) involves the fi...

The third period (`n = 3)` involves the filling up to electrons in_______elements.

A

`8`

B

`18`

C

`27`

D

`10`

Text Solution

Verified by Experts

The correct Answer is:
A
Successive filling of `3s` and `3p` subshell gives rise to the third period of `8` elements from `Na`to `Ar`.
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Knowledge Check

  • The second period (n = 2) involves the filling up to electron in__________atomic orbitals.

    A
    two
    B
    three
    C
    four
    D
    five

  • The fourth period (n = 4) does not involve the filling up of electrons in_______subshell. (i) 4s (ii) 4p (iii) 4d (iv) 4f

    A
    `(iii)`
    B
    `(iv)`
    C
    `(iii),(iv)`
    D
    `(ii),(iii),(iv)`

  • Third peroid of th periodic table contains the following number of elements.

    A
    2
    B
    18
    C
    8
    D
    32

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    An element X belongs to the third period of the p- block elements. It has 4 electrons in the outermost shell. Name the element.

    Among the elements of the third period (Na to Ar), pick out the element that is the most reactive non metal.

    An element 'X' belongs to the third period of the p-block elements. It has four electrons in the outermost shell. The name of the element is

    The sixth period (n = 6) of the periodic table contains 32 elements and successive electrons enter________subshells.

    Assertion: Sixth period is the longest period in the periodic table. Reason : Sixth period involves the filling of all the orbitals of the sixth energy level.

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