The electronic configuration of an element is $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{5} 4 s^{1}$ . This represents its:

Excited state

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Ground state

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Cationic form

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Anionic form

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B Ground state
The element is Chromium (Cr) and it represents its ground state. Since half filled configurations are more stable, the electronic configuration of Cr is $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{5} 4 s^{1}$ and not $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{4} 4 s^{2}$ .

Suggest Corrections

Similar questions

Q. Name the elements with the following electronic configuration.

{1 s}^{2} {2 s}^{2} {2 p}^{6} {3 s}^{2} {3 p}^{6} {3 d}^{6} {4 s}^{1}

If the electronic configuration of an element is $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{2} 4 s^{2},$ the four electrons involved in chemical bond formation will be ---------

Electronic configurations of three elements, $A, B$ and $C$ are given below.

$A : 1 s^{2} 2 s^{2} 2 p^{6}$

$B : 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{3}$

$C : 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{5}$

Stable form of $C$ may be represented by the formula:

Q. Three atoms have the following electron configurations respectively:
(i)

{1 s}^{2} {2 s}^{2} {2 p}^{6} {3 s}^{2} {3 p}^{1}

(ii)

{1 s}^{2} {2 s}^{2} {2 p}^{6} {3 s}^{2} {3 p}^{5}

(iii)

{1 s}^{2} {2 s}^{2} {2 p}^{6} {3 s}^{2} {3 p}^{6} {4 s}^{1}

(a) Which of the three has the largest

{(I E)}_{1}

?
(b) Which has the largest

{(I E)}_{4}

?
Write your answer as a two digit number.
Ex - If answer for a & b is 3 & 2 respectively, answer as 32.

Q. The group of the element with electronic configurations:

{1 s}^{2} {2 s}^{2} {2 p}^{6} {3 s}^{2} {3 p}^{6} {4 s}^{2}

is 2. If true enter 1, else enter 0.

Join BYJU'S Learning Program

The electronic configuration of an element is 1s2 2s2 2p6 3s2 3p6 3d5 4s1. This represents its:

The correct option is B Ground stateThe element is Chromium (Cr) and it represents its ground state. Since half filled configurations are more stable, the electronic configuration of Cr is 1s2 2s2 2p6 3s2 3p6 3d5 4s1 and not 1s2 2s2 2p6 3s2 3p6 3d4 4s2.

The electronic configuration of an element is $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{5} 4 s^{1}$ . This represents its: