1.

An element having electronic configuration- [Ar] 3d^(3) 4s^(2)belongs to ........

Answer»

s-block
p-block
d-block
f-block

Solution :`[Ar] 3D^(3) 4s^(2)` electronic CONFIGURATION means Z = 23 (V). In the element LAST electron entres in 3d-orbital.
"Elements in which the last electron is FILLED in d-orbital are known as d-block element.


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