Question

what are transition metals​

Answer 1

any of the set of metallic elements occupying a central block (Groups IVB–VIII, IB, and IIB, or 4–12) in the periodic table, e.g. iron, manganese, chromium, and copper. Chemically they show variable valency and a strong tendency to form coordination compounds, and many of their compounds are coloured.

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Answer 2

Answer:

"An element whose atom has a partially filled d sub-shell, or which can give rise to cations with an incomplete d sub-shell".

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