The period number and group number of Tantalu | vedclass

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(C) The electronic configuration of Tantalum ($Ta$,$Z = 73$) is $[Xe] \ 4f^{14} \ 5d^3 \ 6s^2$.Since the highest principal quantum number $(n)$ is $6$

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$6, 5$

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(C) The electronic configuration of Tantalum ($Ta$,$Z = 73$) is $[Xe] \ 4f^{14} \ 5d^3 \ 6s^2$.Since the highest principal quantum number $(n)$ is $6$,the period number is $6$.The element belongs to the $d$-block because the last electron enters the $d$-orbital. For $d$-block elements,the group number is calculated as $(n-1)d 	ext{ electrons} + ns 	ext{ electrons} = 3 + 2 = 5$.Therefore,Tantalum belongs to period $6$ and group $5$.						Element			Period,Group							$Tc$ $(Z=43)$			$5, 7$							$Tl$ $(Z=81)$			$6, 13$							$Ta$ $(Z=73)$			$6, 5$

The period number and group number of Tantalum $(Z = 73)$ are respectively:

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