The first synthesis of element number 116 (ununhexium) was accomplished in 2000 at the Joint Institute for Nuclear Research in Dubna. The Uuh was prepared in the reaction shown below. What is the mass number of the isotope of Uuh prepared?
²⁴⁸Cm + ⁴⁸Ca $\rightarrow$ ₁₁₆Uuh + 4 ¹n

Question

The first synthesis of element number 116 (ununhexium) was accomplished in 2000 at the Joint Institute for Nuclear Research in Dubna. The Uuh was prepared in the reaction shown below. What is the mass number of the isotope of Uuh prepared?
²⁴⁸Cm + ⁴⁸Ca

\rightarrow

₁₁₆Uuh + 4 ¹n

Quizplus · Accepted Answer

The mass number of the isotope of Uuh (ununhexium, element 116) prepared is calculated by adding the mass numbers of the reactants (Cm and Ca) and subtracting the mass numbers of the products (4 neutrons). For Cm (248) + Ca (48) = 296, and then subtracting 4 (for the 4 neutrons), we get 292.

The First Synthesis of Element Number 116 (Ununhexium) Was Accomplished →\rightarrow→

The First Synthesis of Element Number 116 (Ununhexium) Was Accomplished $\rightarrow$