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Structure of the Atom — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceStructure of the Atom1 Mark
MCQ
The electron distribution in an aluminium atom:
  • A
    2, 8, 3
  • B
    2, 8, 2
  • C
    8, 2, 3
  • D
    2, 3, 8
✓

Answer

  1. 2, 8, 3

Explanation:

Aluminium atom has 13 protons and 13 electrons.

K L M

Therefore, Electronic configuration of 13AI = 2, 8, 3

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