Select the CORRECT set of group number and pe | vedclass

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(C) The atomic number of $Uub$ (Copernicium,$Cn$) is $112$.Its electronic configuration is $[Rn] \ 5f^{14} \ 6d^{10} \ 7s^2$.Since the valence electro

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$12, 7$

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(C) The atomic number of $Uub$ (Copernicium,$Cn$) is $112$.Its electronic configuration is $[Rn] \ 5f^{14} \ 6d^{10} \ 7s^2$.Since the valence electrons enter the $d$-orbital,it belongs to the $d$-block.The group number for $d$-block elements is calculated as $(n-1)d + ns$ electrons.Group number $= 10 + 2 = 12$.The highest principal quantum number $(n)$ is $7$,so the period is $7$.Therefore,the correct set is $12, 7$.

Select the $CORRECT$ set of group number and period of element $Uub$ (Ununbium,now known as Copernicium,$Cn$).

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