The partial electron configuration of an atom with 12 electrons is shown. 1s22s22p6X Which of the following does X represent? 2d2 3s2 3p2 4s2
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Answer:
Order of filling orbitals,
- S
- Sp
- Sdp
- sdp
- Sfdp
- Sfdp
So, 1s² 2s² 2p^6 3s²
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