Using the VSEPR theory, what is the shape of carbon tetraiodide?

1 Answer
Jun 2, 2014

Tetrahedral, with #109.5^0# bond angles.

Electron pairs repel each other to get as far apart as possible. Lone pairs repel more strongly than bonding pairs, closing bond angles by about #2.5^0# per lone pair.

In #CI_4# the central carbon atom has four bonding pairs and no lone pairs. The shape which allows four electron pairs to get as far apart as possible is a tetrahedron.