A scientist studying a material has determined that 12C, 13C, and 14C occur in the material in a ratio of 1000:10:1. How did he MOST likely differentiate between these forms of carbon?
A) by the number of protons in 12C, 13C, and 14C
B) by the number of electrons in 12C, 13C, and 14C
C) by the number of neutrons in 12C, 13C, and 14C
D) by the biomasses of 12C, 13C, and 14C
E) by the number of positrons in 12C, 13C, and 14C
Correct Answer:
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