How many protons and neutrons are in the nuclide? #Rn^219_86# Chemistry 1 Answer anor277 May 16, 2018 Surely you can do this now? Explanation: What is #Z# for radon? Look up your Periodic Table, and it is the main group element on the bottom right of the main block.... As always the sum of the massive particles gives the isotopic mass... Answer link Related questions How do I determine the molecular shape of a molecule? What is the lewis structure for co2? What is the lewis structure for hcn? How is vsepr used to classify molecules? What are the units used for the ideal gas law? How does Charle's law relate to breathing? What is the ideal gas law constant? How do you calculate the ideal gas law constant? How do you find density in the ideal gas law? Does ideal gas law apply to liquids? Impact of this question 1550 views around the world You can reuse this answer Creative Commons License