Question

explain why electrons enter into 4s orbital but not 3d after filling it​

Answer 1

Answer:

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According to Aufbau principle , electrons first occupy the lowest energy orbital available to them and enter into higher energy orbitals only after the lower energy orbitals are filled . ... And hence electrons fill up in 4s before filling up in 3d .

I hope this helps you........

Answer 2

Answer:

According to Aufbau principle , electrons first occupy the lowest energy orbital available to them and enter into higher energy orbitals only after the lower energy orbitals are filled . ... And hence electrons fill up in 4s before filling up in 3d .

According to Aufbau principle , electrons first occupy the lowest energy orbital available to them and enter into higher energy orbitals only after the lower energy orbitals are filled . ... And hence electrons fill up in 4s before filling up in 3d .I hope this helps you........