1.12 Elements D and E are both in Period 3. Element D ha…
1.12 Elements D and E are both in Period 3. Element D has the smallest atomic radius in Period 3. There are only two elements in Period 3 which have a lower melting point than element E. Elements D and E react together to form compound L. Which compound could be L A MgCl2 B MgS C Na2S D PCl 3