Tuesday
March 31, 2015

Homework Help: ap chem

Posted by Emily on Tuesday, January 23, 2007 at 10:53pm.

consider the molecules PF3 and PF5.

b]is the PF3 molecule polar or is it nonpolar. explain

C] on the basis of bonding principles, predict whether each of the following compounds exists. In each case explain your prediction.
(i) NF5
(ii) AsF5

2. explain why the H-N-H bond angle is 107.5 degrees in NH3.

You need to tell me a little of what you think on these. The last question was a freebie but this one isn't.
hints:
for b, draw the Lewis electron dot structure for PF3 and that will tell you the shape. That will tell you if it is polar or non-polar.

For NF5 and AsF5, go through the Lewis dot structures.

i dont know

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