Provide a symbol for isotope of lead contain 128

Question

Provide a symbol for the isotope of lead that contains 128 neutrons.

Express your answer as an isotope.

Answer 1

Atomic number for lead (Pb) is 82 (i.e. 82 protons)

Atomic mass is protons (82) + neutrons (128) = 210

This would be written as ²¹⁰₈₂Pb