Which pair of elements has the same number of | vedclass

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(B) The valence shell configuration of elements in the same group is identical.$Se$ (Selenium) and $Te$ (Tellurium) both belong to Group $16$ (Oxygen

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$Se, Te$

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(B) The valence shell configuration of elements in the same group is identical.$Se$ (Selenium) and $Te$ (Tellurium) both belong to Group $16$ (Oxygen family).Their valence shell electronic configuration is $ns^2 np^4$,meaning both have $6$ valence electrons.$Na$ ($1$ valence electron) and $Sr$ ($2$ valence electrons) belong to different groups.$Mn$ and $Fe$ are transition metals with varying valence electron counts.$He$ has $2$ valence electrons,while $Ne$ has $8$ valence electrons.

Which pair of elements has the same number of electrons in their valence shell$:-$

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