IB Chemistry SL 1.2.1 Atomic Structure

Practise reading and constructing nuclear notation for atoms and ions. Use atomic number, mass number and charge to determine proton, neutron and electron counts, and relate each…

Syllabus
First assessment 2025
Objective
1.2.1
Level
SL

Exam points

  • use atomic and mass numbers to determine proton and neutron counts for an isotope
  • adjust the electron count for positive or negative ionic charge without changing the nucleus
  • construct a complete nuclear symbol from the element identity and number of neutrons

1.2.1—Atomic structure question 1

[Maximum number: 1]

Titanium is a transition metal.

State the number of protons, neutrons and electrons in the 2248Ti{ }_{22}^{48} \mathrm{Ti} atom.

Protons:

Neutrons:

Electrons:

All question bank results loaded