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Which of the following set of orbitals a...

Which of the following set of orbitals are arranged in correct energy order ?

A

`3p_x gt 3s gt 2p_z ` (in He)

B

`3p_x = 3s = 2p_z` (in H)

C

`4p_x=4p_z =4p_z` (in `He^+`)

D

`4p_x=4p_y=4p_z= 4s = 4d_(xy)` (in H)

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