Actinoids, and generally all the elements from polonium (atomic number 84) to ununoctium (atomic number 118).
Oh, dude, let me break it down for you. So, the three families that contain no radioactive elements are the noble gases, the alkaline earth metals, and the alkali metals. It's like they're the cool kids who don't mess around with that radioactive drama. Just chillin' with their stable atomic structures, you know?
Both metals are radioactive and members of the actinoids family.
No. All elements with atomic number greater than 83 are radioactive, including some metals such as polonium, uranium, etc. But there are radioactive isotopes of most metals on the periodic table but are very rare and sometimes must be produced in reactor or particle accelerator.
Radium is the radioactive metal among alkaline earth metals.
The inner transition metals are radioactive and are found in the f-block. These are commonly referred to as actinoids and are alkali metals.
Most metals are stable and thus not radioactive.
the actinide series
The Actinide series.
Radioactive elements exist in all groups of the periodic table.
The family of radioactive elements is called the Actinides. This group includes elements such as uranium, thorium, and plutonium, which are known for their radioactive properties.
Transition metals. in fact, it is the Only radioactive transition metal!
Radium is a member of the alkaline earth metals group (group 2).