The atom also has 15 electrons.
All phosphorus atoms have 15 protons (hence their atomic number of fifteen). Assuming the atom is neutral, it will also have an equal amount of electrons.
Elements are identified by number of protons on the periodic table. Number 15 is Phosphorus.
If the atom is neutral, then it will have 15 electrons to balance the 15 protons.
An atom with 15 protons, 15 neutrons, and 15 electrons.
Any atom should have equal number of protons and electrons. If the atom contains 15 protons then it must contain 15 electrons.
15 Electrons. A charge-less (neutral) atom must have an equal number of both protons and electrons, otherwise it becomes an ion.
The atomic number of phosphorus is 15. So there are 15 protons
15 protons. Also usually 15 electrons and 15 neutrons.
Atomic number is the number of protons in an atom, not the number of atoms. The element with the atomic number 15 is phosphorus.
15
Protons, because electrons are equal to the atomic number and protons are equal to the number of electrons.
15