Yes, molten radioisotope metals can still emit radiation even when they are in a liquid state. The emission of radiation is a property of the radioactive isotopes themselves, regardless of their physical state (solid, liquid, or gas). Radioactive materials undergo radioactive decay, which involves the spontaneous release of radiation from the unstable atomic nuclei.
When a radioisotope metal is in a molten state, the individual radioactive atoms or ions within the liquid can still undergo radioactive decay and emit various types of radiation, such as alpha particles, beta particles, and gamma rays. The liquid state does not alter the fundamental nature of the radioactive decay process.
It's important to note that handling and containing molten radioactive materials require appropriate safety precautions and specialized equipment to protect individuals from potential radiation exposure. The heat and fluid nature of the molten metal can present additional hazards, so strict safety protocols and engineering controls are necessary to ensure the safe handling and storage of such materials.