Question

Determine the relative size of \(\mathrm{Cs}\) atom compared to a \(\mathrm{Li}\) atom, if their densities are \(1.87\mathrm{\ g/cc}\) and \(0.53\mathrm{\ g/cc}\) respectively.

• A. \(r(\mathrm{Cs}) = 1.753\ r(\mathrm{Li})\)
• B. \(r(\mathrm{Cs}) = 1.936\ r(\mathrm{Li})\)
• C. \(r(\mathrm{Cs}) = 2.753\ r(\mathrm{Li})\)
• D. \(r(\mathrm{Cs}) = 2.936\ r(\mathrm{Li})\)

Hint:

Density \(\rho = \frac{\text{Atomic Mass}}{N_A \times \text{Volume}}\). Ratio accounts for both mass and volume.

Answer 1

The Correct Option is A