405 PHz
I might be wrong because that might be for 0.74 nm. We will see with out people answers
False because when a substance changes from one state of matter to another it is a physical change no matter how many states of matter it skips
A chemical reaction does happen between sodium and water to form Sodium Hydroxide (NaOH) and Hydrogen Gas (H-2)
so you can see those fluorine atoms have really spread out around the central phosphorus atom. this gives us a trigonal bi-pyramidal molecular geometry for pf5.
