technetium-99m-the-isotope-notation-is-98-tc-43-is-the-atomic-weight-98-amu

The isotope notation for technetium-99m is ##””_43^(99″m”)”Tc”##, and its atomic mass is 98.906 u or approximately 99 u.

The amu is equal to the number of protons plus the number of neutrons (mass number) because 1 proton = 1 amu and 1 neutron = 1 amu.

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