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Arrange the following orbitals in the or...

Arrange the following orbitals in the order in which electrons may be normally expected to fill them
`3 s, 2 p, 3 p, 2 s, 3 d, 4 s`

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According to Aufbau principle, the given orbitals will be filled in the order, .2 s, 2 p, 3 s, 3 p., 4s, .3 d.
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