Which chemical element is sodium?
- Amelting point $1535\,^{\circ}\text{C}$; electrical conduction: good; density $7.86\,\text{g cm}^{-3}$
- Bmelting point $1083\,^{\circ}\text{C}$; electrical conduction: good; density $8.92\,\text{g cm}^{-3}$
- Cmelting point $113\,^{\circ}\text{C}$; electrical conduction: poor; density $2.07\,\text{g cm}^{-3}$
- Dmelting point $98\,^{\circ}\text{C}$; electrical conduction: good; density $0.97\,\text{g cm}^{-3}$