electron goemetry? Do you know what it is?

Question

What is the electron geometry for PF 3- and PF 5- ? I know you can't show me but could you tell me the name of the shape it forms ex. linear, octahedral. THANK YOU!

Answer 1

PF3 is pyramidal, with F forming the base of the pyramid and P the summit. PF5 is triagonal bipyramidal: Three F atoms are at the corners of a triangle with P in the center of the triangle. The fourth F is above the the triangle and the fifth one below the triangle. P, and the fourth and fifth F are in one line. P and the first 3 F atoms are in one plane.