Question

Lewis structure of po42-

Answer 1

Answer:

The Lewis structure for PO43- has 32 valence electrons available to work with. You should check the formal charges to make sure that the total charge of the atom is -3. Since it's an ion you need to put brackets around the Lewis structure and then put a -3 outside.

Answer 2

Answer:

Explanation:

for simplification add 3h+

it becomes phosphoric acid

structure of phosphoric acid is easy

make p double bond o and bond oh this is compulsory

and remaining oh and bond o

so  p has three bond oh , 1 double oxygen

now remove hydrogens from oxygen atoms

on removing oxygen on each charge the oxygen gets - charge on it