List all orbitals from 1s through 5s according to increasing energy for multielectron atoms. rank orbitals from smallest to largest energy. 3p2p

Electrons are arranged in order of increasing energy.

According to the Aufbau principle, electrons are filled into orbitals in order of increasing energy.

This means that lower energy orbitals are first filed before higher energy orbitals.

The order of orbitals from smallest to largest energy beginning at 1s through 5s is;

1s < 2s< 2p<  3s<  3p < 4s < 3d < 4p < 5s.

The way we arrived at this order is shown in the image attached.

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1s < 2s < 2p < 3s < 3p < 4s < 3d < 4p < 5s

Explanation:

You can predict the order of orbital energies by constructing a diagram as shown below.

Follow the arrows to get the orbitals in order of increasing energy.

The order is

1s < 2s < 2p < 3s < 3p < 4s < 3d < 4p < 5s