1980 10
What is the atomic mass of Pennium? $\(1994\)$ Which isotope of Pennium has the highest mass number? The isotope with the mass number 2010. Which isotope of Pennium has the lowest mass number? The isotope with the mass number 1980. How does the atomic mass of Pennium connect to the masses of its isotopes? The atomic mass of Pennium is a weighted average of the masses of its isotopes. isotopes of pennium lab answer key
2010 5