What is the definition of a transistion metal?

Answer 1

In chemistry, the term transition metal (sometimes also called a transition element) has two possible meanings:

• The IUPAC definition states that a transition metal is "an element whose atom has an incomplete d sub-shell, or which can give rise to cations with an incomplete d sub-shell".

• Most scientists describe a "transition metal" as any element in the d-block of the Periodic Table, which includes groups 3 to 12 on the periodic table. All elements in the d-block are metals. In actual practice, the f-block is also included in the form of the lanthanide and actinide series.

Answer 2

Transition metals are elements found in the d-block of the periodic table that exhibit characteristic properties such as variable oxidation states, the ability to form colored compounds, and the presence of unpaired electrons. They often act as catalysts in chemical reactions due to their ability to easily donate or accept electrons.