Predict the density of Cs from the density of the following elements.
`K=0.86g//cm^(3)" Ca"=1.548g//cm^(3)" Sc"=2.991g//cm^(3)`
`Rb=1.532g//cm^(3)" Sr"=2.63g//cm^(3)" Y"=4.34g//cm^(3)`
`Cs=? " Ba"=3.51g//cm^(3)" La"=6.16g//cm^(3)`

Explanation

To predict the density of cesium (Cs) based on the given densities of other elements, we can follow these steps:

### Step 1: Identify the Groups
We have the following elements and their densities:
- Group 1 (Alkali Metals):
- K (Potassium) = 0.86 g/cm³
- Rb (Rubidium) = 1.532 g/cm³
- Cs (Cesium) = ?
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