Home
Class 8
CHEMISTRY
An atom of an element has one electron i...

An atom of an element has one electron in the valence shell and the two consecutive inner shells have 8 electrons each. Find the atomic number of that element. Write the electronic configruation of preceding and succeding elements.

Text Solution

Verified by Experts

K-shell `to` 2 electrons
L-shell `to` 8 electrons
M-shell `to` 8 electrons
N-shell `to` 1
Atomic number = 2 + 8 + 8 + 1 = 19
Preceding element is Ar and electronic configuration is 2, 8, 8, and the succeeding element is Ca and its electronic configuration is 2, 8, 8, 2.
Doubtnut Promotions Banner Mobile Dark
|

Similar Questions

Explore conceptually related problems

An atom of an element has two electrons in the valence shell and two consecutive inner shells have 8 electrons each. Calculate the atomic number of the element.

An atom of an element has one electron in the valence shell and the two inner shells have 8 electrons each. Find the atomic number of that element.

Knowledge Check

  • An atom of an element has two electrons in the valence shell and two consecutive inner shells have 8 electrons each. Calculate the atomic number of the element.

    A
    19
    B
    20
    C
    30
    D
    18

  • An element has 8 electrons in the valence shell

    A
    it will lose electron
    B
    it will gain an electron
    C
    It neither gains or lose electron
    D
    it will make bond with itself

  • Set of elements having one electron in their valence shell is :-

    A
    `Cl,Br,I`
    B
    `Na,Mg,Al`
    C
    `B,Al,Ga`
    D
    `K,Rb,Cs`

    • Similar Questions

    Explore conceptually related problems

    An atom of an element has one electron in the valence shell and the two inner shells have 8 electrons each. Find the atomic number of that element.

    A trinegative ion of an element has 8 electrons in its M shell. The atomic number of the element is

    An element has 2 electrons in the M shell. What is the atomic number of the element ?

    The atomic number of an element having the valency shell electronic configuration 4s^2 4p^6 is

    The general valence shell electronic configuration of transition elements is

    Home
    Profile