A $1.15\,\text{g}$ sample of a metallic element combines with $300\,\text{cm}^3$ of oxygen at $298\,\text{K}$ and $1\,\text{atm}$ pressure, producing an oxide containing $\text{O}^{2-}$ ions. Which metal could it be?
- Acalcium
- Bmagnesium
- Cpotassium
- Dsodium