Question
GeneralGeneralGeneral

What is the atomic mass of sodium?

Verified Answer

The atomic mass of sodium (Na) is:

23 u (atomic mass units)

Explanation:

  • Sodium mainly exists as a single stable isotope: Na-23
  • Because of this, its atomic mass is a whole number

Basic composition:

  • Protons = 11
  • Neutrons = 12
  • Electrons = 11

Total mass = 23 u

Key Takeaway:

The atomic mass of sodium is 23 u, corresponding to its most stable isotope Na-23.