Question

Which of the following electron has highest energy a-25 b-2p c-15 d-3p

Answer 1

Answer:

According to Aufbau principal

electron of 3p orbital has higher energy then 1s, 2s, 2p.

increasing order of orbital given by aufbau ..

1S<2S<2p<3S<3p..

Here 3p has highest energy

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