2007-03-03 13:41:20 · 2 answers · asked by erikck 2 in Science & Mathematics ➔ Chemistry
H...........F
...C==C
H..........F
(ignore the dots) The important concept in this question is the geometry. You must first be able to draw out the lewis dot structure for this molecule and realize that there has to be a double bond. Alkenes (double bonds) are planar and the bond angle of H-C-H or F-C-F or H-C-F is going to be 120degrees. This gives it trigonal planar geometry, allowing for the maximum separation of the atoms. Note that this is NOT the only possible structure for this molecular formula.
2007-03-03 13:57:13 · answer #1 · answered by cosmo_chem 1 · 0⤊ 0⤋
Cosmo is off base.
CH2F2 has no double bonds. This is simply methane with two substituted fluorines. Therefore this is almost tetrahedral, as CH4 would be, but slightly non symmetrical. I would guess the angles here are about 108 degrees.
2007-03-03 14:56:04 · answer #2 · answered by reb1240 7 · 1⤊ 0⤋