Anitha argued that the 3d orbital is filled first, but not 4s orbital, with electrons.
By asking some questions Saritha corrected Anitha's argument.
What would be those questions ?

Jhansi explained the concept of valency by asking some questions to Kranthi what would be those questions ?

Srilatha often confused with acids and bases. By asking some questions, Suneetha clarified the concepts of acids and bases. What would be those questions ?

After filling up ‘4s’ orbital the electron enters:

Out of 3d and 4s orbitals, which is filled first ?

Why is 4s orbital filled before the filling of 3d orbital?

The energy of the electron in the 3d orbital is less than that in the 4s orbital in the hydrogen atom

A student argued that the 3d orbitals will be filled only after the 4s orbital is completely filled in accordance with aufbau principle. Then another student opposed by saying that it is not true for certain elements like Cr and Cu. Whose argument is correct?

Karthik did not understand the word induced emf. Hemanth was explained him by asking some question.What would be those question.