Choose the correct order of density of the alkali metals.

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Choose the correct order of density of the alkali metals.

Li < K < Na < Rb < Cs
Li < Na < K < Rb < Cs
Cs < Rb < K < Na < Li
Li < Na < K < Cs < Rb

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The increasing order of density of alkali metals as

\(\begin{array}{l} \underset{0.53}{Li}<\underset{0.86}{K}<\underset{0.97}{Na}<\underset{1.53}{Rb}<\underset{1.87}{CS}\underset{\text{(in g/dm}^3)}{}\end{array}\)

‘K’ metal has less density as compare to ‘Na’ metal.

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Choose the correct order of density of the alkali metals.

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