Atomic Structure Question 87
When $ 3d $ orbital is complete, the new electron will enter the $ 4s $ orbital [EAMCET 1980; MP PMT 1995]
Options:
A) $ 4p $-orbital
B) $ 4f $ -orbital
C) $ 4s $ -orbital
D) $ 4d $-orbital
Show Answer
Answer:
Correct Answer: A
Solution:
According to the Aufbau principle the new electron will enter in those orbital which have least energy. So here $ 4p $ -orbital has least energy then the others.
BETA
