15 protons is a dead giveaway that we're dealing with phosphorus (it is atomic number 15). 18 electrons means it has 3 extra (18-15 = 3) electrons, each electron has a -1 charge, so we have 3 extra -1 charges...
So putting it all together we get: P3-
The ion charge is minus three. Electrons are negatively charged and there are three more of them than of the oppositely charged protons.
The charge is 3-.
3+
'-3' It is not an atom, when it is a charged species, but an ION. 15 protons (15+) 18 electrons (18-) Hence +15 - 18 = -3 The charge. By the numbers given , this is the element Phosphorus. , which can exhibit a 'P^(-3) ion.
A phosphorus atoms has 15 protons and will form an ion with 18 electrons. Phosphorus-31 is one of the isotopes.
The phosphide ion has 18 electrons as it forms an anion with the valency of three.
the nucleus always has a positive charge. The atom on the other hand in its singular state will have no charge as the electrons negative charge counter the protons positive charge. in this example there will be 31 electrons The element would be Gallium but there are not enough neutrons in your question to even make a viable isotope. Gallium typically has 31 protons and 39 neutrons
15 Electrons. A charge-less (neutral) atom must have an equal number of both protons and electrons, otherwise it becomes an ion.
3+
'-3' It is not an atom, when it is a charged species, but an ION. 15 protons (15+) 18 electrons (18-) Hence +15 - 18 = -3 The charge. By the numbers given , this is the element Phosphorus. , which can exhibit a 'P^(-3) ion.
The electrical charge is +3; this is the isotope aluminium-28.
A phosphorus atoms has 15 protons and will form an ion with 18 electrons. Phosphorus-31 is one of the isotopes.
The phosphide ion has 18 electrons as it forms an anion with the valency of three.
the nucleus always has a positive charge. The atom on the other hand in its singular state will have no charge as the electrons negative charge counter the protons positive charge. in this example there will be 31 electrons The element would be Gallium but there are not enough neutrons in your question to even make a viable isotope. Gallium typically has 31 protons and 39 neutrons
Phosphorus' atomic number is 15. Thus it has 15 protons, all of which have a +1 charge. To balance out the charge, it also must have 15 electrons.
P3- has 15 protons, 16 neutrons and 18 electrons.
It wouldn't be an atom, it would be an ion. It would have 85 negative charges, but would not exist in reality.
Protons are particles with a positive charge, and in order for your atom to be neutral the positive charge must be cancelled out by adding negative charges of the same value. Electrons are negatively charged. So adding 15 electrons to 15 protons would result in a neutral atom. Also since your atom contains 15 protons it must be Phosphorus, element number 15.
15 electrons and 15 protons