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CAIE A-Level Chemistry AS 1.3.7 The Electrons in Boxes Notation Questions

Practise drawing electrons-in-boxes diagrams and interpreting orbital occupancy to determine paired and unpaired electrons in atoms and ions.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • Use electrons-in-boxes notation to show orbital occupancy and determine paired and unpaired electrons in atoms and ions.

CAIE A-Level Chemistry AS 1.3.7 The Electrons in Boxes Notation Questions question 1

[Maximum number: 1]

Which atom has exactly three unpaired electrons in the ground state?

A

an isolated gaseous aluminium atom

B

an isolated gaseous carbon atom

C

an isolated gaseous chromium atom

D

an isolated gaseous phosphorus atom

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