Which of the following orbital will be filled first than 4p?
Correct answer: C. 3d
- A. 4s
- B. 2p
- C. 3d
- D. 1s
Explanation
According to the diagram below, 3d orbital should be filled before 4p, that is why option C is correct.
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Atomic structure covers the discovery of the proton, Planck's quantum theory, hydrogen emission spectra and the evidence for quantized energy levels. You will use quantum numbers to describe orbitals, distinguish s, p, d and f orbital shapes, and write electronic configurations, including the correct order of electron filling.
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