To react completely, $1.15\,\text{g}$ of a metallic element requires $300\,\text{cm}^3$ of oxygen at $298\,\text{K}$ and $1\,\text{atm}$ pressure, producing an oxide containing $\text{O}^{2-}$ ions. Which metallic element could this be?
- Acalcium
- Bmagnesium
- Cpotassium
- Dsodium