utets13 q126

126Electronic configuration of an element is 1s², 2s², 2p⁶, 3s², 3p⁶, 4s¹, 3d⁵. The block and period of the element in periodic table will be

Option : C
Explanation : (c) In the given electronic configuration 4 is the highest principal quantum number so it belongs to 4th period and its last subshell is d, hence it belongs to d-block.

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