 Custom Search Lewis Dot of the Silicon Hexafluoride Ion SiF62- Si does not follow the octet rule. It actually bonds. It will hold more than 8 electrons. Silicon having valence electrons in the 3rd energy level, will also have access to the 4d sublevel, thus allowing for more than 8 electrons. SiF62- is d2sp3 hybridized and contains no lone pair and 6 bonding pairs of valence electrons around the Silicon. The VSEPR predicts the Octahedral shape. Elements in the first 2 periods of the Periodic Table do not have access to the d sublevel and must adhere to the octet (or duet H and He) rule.
from http://treefrog.fullerton.edu/chem/LS/SiF6neg2LS.html |
