If the Aufbau principle had not been followed | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The electronic configuration of $Ca$ $(Z = 20)$ according to the Aufbau principle is $1s^2 2s^2 2p^6 3s^2 3p^6 4s^2$.According to the Aufbau princ

Vedclass · Accepted Answer

$d-$block

Vedclass · Answer

(C) The electronic configuration of $Ca$ $(Z = 20)$ according to the Aufbau principle is $1s^2 2s^2 2p^6 3s^2 3p^6 4s^2$.According to the Aufbau principle,the $4s$ orbital is filled before the $3d$ orbital due to its lower energy.If the Aufbau principle were not followed,the $3d$ orbital would be filled before the $4s$ orbital.In that case,the electronic configuration of $Ca$ would be $1s^2 2s^2 2p^6 3s^2 3p^6 3d^2$.Since the last electron enters the $3d$ orbital,the element would be placed in the $d-$block.

If the Aufbau principle had not been followed,$Ca$ $(Z = 20)$ would have been placed in the

Similar Questions

Explain $(n + l)$ rules for the energy of an orbital with an example.

Which of the following sets of quantum numbers is not possible for an electron?

Which set of quantum numbers is correct for the unpaired electron of a chlorine atom?

The magnetic quantum number for a $d$-orbital is ...... .

Which orbital has two angular nodal planes?

Vedclass Test Series

Exam Paper Generator

Online Exam Module