Chemistryhard · Past Paper
Which element has the electronic configuration \(1s^2 2s^2 2p^6 3s^2 3p^1\)?
AMagnesium
BAluminium
CSilicon
DSodium
✓ Correct Answer: B — Aluminium
The total number of electrons is 13 (2+2+6+2+1), which is the atomic number of Aluminium.
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