The ion p3− has protons and electrons. enter your answers as integers separated by a comma.'

The symbol is for phosphorus having atomic number 15. That means it has in its neutral state.

The given symbol has a -3 charge that means it has gained 3 electrons so, the number of electrons in the is: . The number of protons will remain same that is the number of protons = 15.

So, the ion has that gives charge on the ion.

So, the answer is .