Si + 2 Cl 2 → SiCl 4. Hence shape is linear.BCl3:The central atom (B) has only three bond pairs and no lone pair. Hence shape is triangular planar.SiCl4:The central atom (Si) has four bond pairs and no lone pair. Silicon has four valence electrons. > Silicon is element 14 in the Periodic Table It has two electrons in its first shell, eight electrons in the second shell, and four electrons in the third shell. Question: Complete The Following Chart Compound/ Ion Total No. Sulfur has 6 valence electrons. Sulfur is the least electronegative, we'll put that at the center, and then we'll put the Chlorines around the outside. The electron groups are also attracted to the nucleus (otherwise the molecule would fall apart), but Chlorine has 7, but there are four Chlorines; so 6 plus 28 is 34 total valence electrons. An explanation of how to find the number of valence electrons for molecules. Silicon tetrachloride is prepared by the chlorination of various silicon compounds such as ferrosilicon, silicon carbide, or mixtures of silicon dioxide and carbon.The ferrosilicon route is most common. Transcript: This is the SCl4 Lewis structure: sulfur tetrachloride. The central atom (Be) has only two bond pairs and no lone pair. It was first prepared by Jöns Jakob Berzelius in 1823. In the laboratory, SiCl 4 can be prepared by treating silicon with chlorine:. Since the electrons in the third shell are the outermost electrons, silicon has four valence electrons. LOLOLOLOLOLOLOLOLOLOL FAIL KIDS ARE FAIL. B C l 3 has 6 valence electrons on B atom and accepts pair of electrons from ammonia to complete its octet. what this stupid answer actually means, is that Si has 4 valence electrons Cl has 7 valence electrons = 32 valence electrons in total Hence, it is an electron deficient compound. Preparation. BeCl2:Lewis dot structure Cl: Be : Cl. 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