Question

What is the molecular shape of PF3?

Answer 1

we can't write molecule shape here...

Answer 2

P -> 5 valences

F -> 7 valences

PF3 5 + (3 x 7) = 26

..

:F:

| ..

:P - F:

| ..

:F:

..

6e for bonding. It remains 26 - 6 = 20e

18e for 3F to complete octet. 20 - 18 = 2e

2e for P. 2 - 2 = 0

AX3E