Question

Which isotope was chosen as the standard reference for measuring atomic masses?

Answer 1

Answer:

heya..

here is ur answer

Physicists picked the pure isotope Oxygen-16, because they tended to make their measurements on the basis of massspectrometry. ... Instead of using either Hydrogen, or Oxygen as the standard, the isotope of Carbon with 6 protons and 6 neutrons in its nucleus (Carbon-12) was given a mass of exactly 12.

i hope its help u

Answer 2

Answer:

carbon 12

Explanation:

Carbon-12 (12C) is the more abundant of the two stable isotopes of carbon ... Carbon-12 is of particular importance in its use as the standard from nucleus