Q29 P - Chemistry: Molecular Nature Of Matter And Change

Question

Which of the actinides are radioactive?

Step-by-Step Solution

Answer

All the actinides are radioactive.

Step 1: Definition of actinides

Follow the element Actinium; actinides are elements with atomic numbers ranging from 90 to 103.

Step 2: Actinides are radioactive

All actinides are radioactive. Actinides are known to have heavy nuclei, or nuclei which are abundant in protons or neutrons. Their radioactivity stems from them decaying radioactively to gain smaller nuclei and achieve a more stable state.