Select the elements belonging to the same gro | vedclass

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Question

(A) Option $A$ is correct.Elements in the same group have the same valence shell electronic configuration.For option $A$ $(Z = 4, 12, 38, 88)$:$Z = 4$

Vedclass · Accepted Answer

$Z = 4, 12, 38, 88$

Vedclass · Answer

(A) Option $A$ is correct.Elements in the same group have the same valence shell electronic configuration.For option $A$ $(Z = 4, 12, 38, 88)$:$Z = 4$ is $Be$ $([He] 2s^2)$$Z = 12$ is $Mg$ $([Ne] 3s^2)$$Z = 38$ is $Sr$ $([Kr] 5s^2)$$Z = 88$ is $Ra$ $([Rn] 7s^2)$All these elements belong to Group $2$ (Alkaline Earth Metals) as they all have $ns^2$ valence configuration.

Select the elements belonging to the same group from the following list:

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