CAIE IGCSE Chemistry 2.2.5 Electronic Configuration of Elements Questions

Use electron configurations to identify atoms, ions and stable ion formation.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • write and interpret electronic configurations
  • determine electron arrangements in atoms and ions
  • identify ions with the same electronic structure
  • use electron configuration to predict ion formation and charge

CAIE IGCSE Chemistry 2.2.5 Electronic Configuration of Elements Questions question 1

[Maximum number: 1]

What is the total number of electrons in one molecule of ammonia, NH3\mathrm{NH}_{3} ?

A

6

B

8

C

10

D

11

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