Read the Assertion and Reason below and choose the correct option. — Nuclear Chemistry and Radioactivity Chemistry Question

💡 Solution & Explanation

Equal masses of pure $\text{U}^{238}$ and $\text{U}^{238}\text{F}_6$ contain different amounts of $\text{U}^{238}$ atoms, so their total activities will be different. Thus, Statement I is false. Specific activity (activity per unit mass of the pure radionuclide) is a nuclear property independent of chemical/physical state. Thus, Statement II is true. Therefore, correct answer is D.