Hi everyone, I had a few chemistry questions that I am unable to answer and I looked through my notes and text but I am still confused on. So I would be really grateful if someone could help me out. 1. How many atoms in BF\3 reside in the same plane? How many in NH\3 reside in the same plane? Why? 2. How many atoms are coplanar in CH\4 and XeF\4. And why? 3. SF\4 is see-saw and XeF\4 is square planar. Is either of them symmetrical or isotropic? 4. Using only the periodic table (but NOT Lewis or VSEPR structures) predict the geometries of the following molecule: A) AsH\3 Thanks so much!!!! Even if you could help me with one, I'd really grateful!! Thanks.