Estimate

A randomly chosen natural carbon atom is carbon-12

Probability:
98.93%
Odds:
92 to 1
dBan
+19.7 dBan

In a representative natural composition, carbon-12 makes up about 98.93% of carbon atoms.

Calculation

p ≈ 0.9893 for carbon-12

Assumptions

The model uses a representative natural isotopic composition. Isotope fractions vary by material.

Sources

  1. NIST isotopic composition: carbon