Question

why is it incorrect to use the value 12.01 when calculating the number of neutrons in a carbon atom? it is the atomic number, not the mass number it would give an incorrect number of neutrons it represents the mass number of the most abundant isotope it is not a whole number

Explanation:

The value 12.01 is the average atomic mass of carbon, which is a weighted - average of the masses of its isotopes. The number of neutrons is calculated using the mass number of a specific isotope (a whole number), not the average atomic mass.

Answer:

It is not a whole number