IB Chemistry SL 1.3.4 Sublevels and Orbital Shapes

Practise dividing main energy levels into s, p, d and f sublevels and connecting them to periodic-table blocks. Recognise and sketch spherical s orbitals and dumbbell-shaped p…

Syllabus
First assessment 2025
Objective
1.3.4
Level
SL

Exam points

  • identify spherical s and dumbbell-shaped p orbitals from labelled diagrams
  • sketch and label an s orbital and an axis-aligned p orbital with its node at the origin
  • connect the occupied sublevel to the s, p, d or f block of the periodic table

1.3.4—Sublevels question 1

[Maximum number: 2]

Phosphorus is an element that is an essential part of the biological molecules involved in both respiration and photosynthesis.

Sketch the shapes of two different orbital types in the second energy level and label each orbital.

Figure for Question 1.3.4—Sublevels question 1 — IB Chemistry SL
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