Study
CHM-101 route
Unit 2 · Lesson 2 of 4 10 min

Isotopes and Relative Atomic Mass

Same element, different weights. The reason the periodic table is full of decimals.

What this unit covers

Unit 2: Atomic Structure

  1. 1 Subatomic Particles, Atomic Number and Mass NumberThree particles build every atom in the universe, and two numbers tell you how many of each. · 10 min
  2. 2 Isotopes and Relative Atomic MassSame element, different weights. The reason the periodic table is full of decimals. · 10 min
  3. 3 Atomic Models: Dalton to BohrFour scientists, four models, and one shocking bounce off a sheet of gold. · 13 min
  4. 4 Quantum Numbers and Atomic OrbitalsEvery electron in an atom has a four-part address, and no two share the same one. · 10 min