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Question: 1
d and f block elements are called transition elements.Give reasons.
Answer: 1
1-33d and f block elements are located in between s and p block elements in the periodic table.Their properties are also in between s and p block elements and they vary from left to the right.It means that their properties show a transition in a systematic way.In d block elements d-d transition occur and elements exhibit colors. Similarly in f block elements d and f orbital show transition of elements hence these are called inner transition elements.That is why they are called as transition elements.