1. Tardigrade
  2. Question
  3. Chemistry
  4. If Aufbau rule is not followed, K-19 will be placed in ....... block

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. If Aufbau rule is not followed, $K-19$ will be placed in ....... block

Classification of Elements and Periodicity in Properties

Solution:

E.C. of $K=19$ in the absence of Aufbau rule is
$1 s^2 2 s^2 2 p^6 3 s^2 3 p^6 \underset{\uparrow}{3 d^1}$
Last-filling electron goes into $d$-orbital
Thus, $d$-block element