What is the name of the product isotope formed when Radon-222 decays by alpha decay?

Which statement is a reason to support population regulation? a) it is unethical for us to control birth control rates b) humans have the freedom to produce as many children as desired c) the gap between the rich and poor has been narrowing since 1960 d) billions more people on the earth will intensify many environmental and social problems

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

What is the mass of 8 moles of sodium atoms