The Data Booklet is needed for this question. $2.920\,\text{g}$ of a Group II metal, $X$, reacts with excess chlorine to produce $5.287\,\text{g}$ of a compound with formula $\text{XCl}_2$. What is the identity of metal $X$?
- Abarium
- Bcalcium
- Cmagnesium
- Dstrontium