Question

What transition metals are radioactive?

Answer 1

Hint: In the above mentioned question, we will get to know about the transition metals, the properties of transition metals and also we will get to know their place in a periodic table and the names of the transition metals.

Complete step by step answer:
Transition metals are regular metals, with properties like a better capacity than lead power and warmth. They likewise have the metallic properties of brilliance, pliability, and flexibility. Lanthanides are moderately responsive for transition metals, and actinides are radioactive.
Transition metal, any of various chemical elements that have valence electrons—i.e., electrons that can participate in the formation of chemical bonds—in two shells instead of only one. While the term transition has no particular chemical significance, it is a convenient name by which to distinguish the similarity of the atomic structures and resulting properties of the elements so designated. They occupy the middle portions of the long periods of the periodic table of elements between the groups on the left-hand side and the groups on the right. Specifically, they form Groups $ $ $ 3{\text{ }}(IIIb) $ through $ 12{\text{ }}\left( {IIb} \right).\; $ When looking at a periodic table, the atomic mass of each element is; for example, carbon has an atomic mass of $ $ $ 12.011 $ . When atoms have no known stable isotopes, the atomic number is displayed as a whole number in parenthesis, such as for technetium: $ $ $ \left( {98} \right). $ While certain isotopes of all elements can be radioactive, an element is considered radioactive if it has no stable isotopes. The transition metals with no stable isotopes are:
 $ Tc,{\text{ }}Lr,{\text{ }}Rf,{\text{ }}Db,{\text{ }}Sg,{\text{ }}Bh,{\text{ }}Hs,{\text{ }}Mt,{\text{ }}Ds,{\text{ }}Rg,{\text{ }}and{\text{ }}Cn $ $ $ . Notice that all except $ $ $ Tc $ are transuranic, meaning that their atomic number is greater than $ $ $ 92. $

Note:
Now a question arises that all transition metals are d-block elements but all d-block elements are not transition elements. All transition metals d-block elements but all d-block elements are not transition elements because all d- block elements which don't have completely filled d- orbitals are not counted as transition, so such elements are exceptional. $ Eg,{\text{ }}Zn,{\text{ }}CD{\text{ }}and{\text{ }}Hg. $