Question

The difference between the actual isotopic mass and the sum of masses of proton neutron and electrons is called

Answer 1

Explanation:

Relative isotopic mass (a property of a single atom) is not to be confused with the averaged quantity atomic weight (see above), that is an average of values for many atoms in a given sample of a chemical element. While atomic mass is an absolute mass, relative isotopic mass is a dimensionless number with no units.

Forms of the same atom that differ only in their number of neutrons are called isotopes. Together, the number of protons and the number of neutrons determine an element's mass number: mass number = protons + neutrons.

Answer 2

Answer:

Answer:

Explanation:

atomic mass is an absolute mass

isotopic mass is a dimensionless number with no units.

atomic mass loss of units results from the use of a scaling ratio with respect to a carbon-12 standard.

isotopic mass" refers to this scaling relative to carbon