Elements D and E are each in Period 3. Element D has the smallest atomic radius in Period 3. Only two elements in Period 3 have a melting point lower than that of element E. When elements D and E react together, they form compound L. Which compound might L be?
- A$\text{MgCl}_2$
- B$\text{MgS}$
- C$\text{Na}_2\text{S}$
- D$\text{PCl}_3$