Each of the elements in group IVA forms dihalides and tetrahalides. There are also a few silicon compounds
of the type E 2 X 6 as a result of silicon having a greater tendency for catenation. The halogen
compounds of the 2 elements have greater ionic character to the bonds and thus have higher melting
and boiling points than the halides containing the 4 elements. Table 14.2 presents a summary of
melting points and boiling points for these compounds.