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Structure of the Atom — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceStructure of the Atom1 Mark
Question
The electron distribution in an aluminium atom is:
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Answer

  1. 2, 8, 3.
Explanation:
The atomic number of aluminium is 13 and the first shell can have at the most two electrons. Hence, option (a) is correct.

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