Many elements have non-integral atomic masses, because

Question

Many elements have non-integral atomic masses, because (A) they have isotopes (B) their isotopes have non-integral masses (C) their isotopes have different masses (D) the constituents, neutrons, protons and electrons, combine to give fractional masses

Tardigrade Admin · Accepted Answer

Many elements have several isotopes. For such elements, atomic mass is average of the atomic masses of different isotopes, which is usually non-integral.

Q. Many elements have non-integral atomic masses, because

they have isotopes

their isotopes have non-integral masses

their isotopes have different masses

the constituents, neutrons, protons and electrons, combine to give fractional masses

Many elements have several isotopes. For such elements, atomic mass is average of the atomic masses of different isotopes, which is usually non-integral.