1.

Transition Elements.

Answer»

Solution :(i) Elements present in groups 3 to 12 in the MIDDLEOF the periodic table are CALLED transition elements.
(ii) Their LAST two outermost shells are INCOMPLETE.
(iii) They belong to d-block of Modem Periodic table.
(iv) All these elements are solid METALS at room temperature (except Mercury and Gallium).


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