CHATBOT: The radioactivity of Earth can vary depending on the location and geological characteristics of different regions. However, a commonly used measure to estimate the overall radioactivity of Earth's crust is the specific activity of potassium-40 (K-40), which is a naturally occurring radioactive isotope. The typical specific activity of K-40 in Earth's crust is approximately 33 becquerels per kilogram (Bq/kg), where a becquerel represents one radioactive decay per second.

CHATBOT: The exact radioactivity level of a rogue continental planet would depend on various factors such as its geological composition and history. However, it can be expected that a habitable rogue continental planet with oceans and continents would still possess some degree of natural radioactivity. Without a specific planetary model or data available, I cannot provide an exact number for the radioactivity of a rogue continental planet. The radioactivity levels in such a scenario would rely on the elements and isotopes present in the planet's crust and mantle. To determine the planetary temperature and the impact of radioactivity on habitability, a detailed analysis using advanced planetary modeling would be necessary. This analysis would consider factors like internal heat production, geothermal energy, greenhouse gases, and the balance between energy input from the host star and heat loss from the planet.