Correct order of density in IIA group (alkali | vedclass

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(A) The density of alkaline earth metals ($IIA$ group) generally increases down the group as atomic mass increases faster than the atomic volume.Howev

Vedclass · Accepted Answer

$Ca < Mg < Be$

Vedclass · Answer

(A) The density of alkaline earth metals ($IIA$ group) generally increases down the group as atomic mass increases faster than the atomic volume.However,there is an anomaly in the case of $Ca$ and $Mg$.The densities of the elements are: $Be$ $(1.85 \ g/cm^3)$,$Mg$ $(1.74 \ g/cm^3)$,and $Ca$ $(1.55 \ g/cm^3)$.Wait,checking standard values: $Be$ $(1.85)$,$Mg$ $(1.74)$,$Ca$ $(1.55)$,$Sr$ $(2.64)$,$Ba$ $(3.51)$.Actually,the density order for the first three elements is $Ca Therefore,the correct order is $Ca < Mg < Be$.

Correct order of density in $IIA$ group (alkaline earth metals) is:

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