1.

Distinguish between the following pairs :Transition elements and Inner transition elements

Answer»
Transition elementsInner transition elements
iElements placed in groups 3 to 12 in the middle of the modern periodic table are called transition elements.Elements placed at the bottom of the modern periodic table are called inner transition elements.
iiThese elements have two incomplete outermost shells.These elements have three incomplete outermost shells.
iiiThey belong to the d-block in the modern periodic tableThey belong to the fblock in the modern periodic table.


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