Silicon reacts with chlorine to form the covalent compound SiCl4. Draw a "dot & cross" diagram (showing only valence electron) to show...the structure of this compound.

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thewriter | College Teacher | (Level 1) Valedictorian

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.     Cl                 Cl

.         0x       x0

.               Si

.         0x       x0

.     Cl                  Cl

In the dot and cross diagram of SiCl4, the four chlorine atoms which only have one electron in the outermost shell give the electron to be added to the outermost shell of Si. As Silicon has 4 electrons in the outermost shell it needs four of these electrons, one coming from each Cl atom, to have a stable number of eletrons in the valence shell. The final compound is stable as each of the atoms now has 8 electrons in its valence shell.