According to standard data, how many of the following alkaline earth metals have a density strictly — s Block Elements Chemistry Question

💡 Solution & Explanation

The densities (in $\text{g cm}^{-3}$) are: Be ($1.84$), Mg ($1.74$), Ca ($1.55$), Sr ($2.63$), Ba ($3.59$). Only Beryllium, Magnesium, and Calcium have densities less than 2.0.