Question

.. Which would be larger: an atomic mass unit based on the current standard or one
based on the mass of a Be-9 atom set at exactly 9 amu?
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Answer 1

Step-by-step explanation:

The C12 atom consists of 6 protons and 6 neutrons, so the average mass would be the average of proton and neutron. ... Hence, the one based on Be9 atom is larger.