Which of the following alkali metals has a de | vedclass

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(D) The densities of alkali metals increase down the group from $Li$ to $Cs$. $Li$,$Na$,and $K$ have densities less than water $(1.00 \ g/cm^3)$. Spec

Vedclass · Accepted Answer

$Rb$

Vedclass · Answer

(D) The densities of alkali metals increase down the group from $Li$ to $Cs$. $Li$,$Na$,and $K$ have densities less than water $(1.00 \ g/cm^3)$. Specifically,the densities are: $Li$ $(0.53 \ g/cm^3)$,$Na$ $(0.97 \ g/cm^3)$,$K$ $(0.86 \ g/cm^3)$,and $Rb$ $(1.53 \ g/cm^3)$. Since $1.53 \ g/cm^3 > 1.00 \ g/cm^3$,$Rb$ is heavier than water. Therefore,the correct option is $D$.

Which of the following alkali metals has a density greater than water?

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