So for the element of PHOSPHORUS, you already know that the atomic number tells you the number of electrons. That means there are 15 electrons in a Phosphorus atom. Looking at the picture, you can see there are two electrons in shell one, eight in shell two, and five in shell three.
Just so, what is the neutrons of phosphorus?
|Atomic Mass||30.974 atomic mass units|
|Number of Protons||15|
|Number of Neutrons||16|
|Number of Electrons||15|
How many protons and neutrons does phosphorus 33 have?
Chlorine has atomic number 17 and mass number 35. It has 17 protons, 17 electrons, and 18 neutrons/ 35 protons, 35 electrons, and 17 neutrons. 21. Phosphorus-33 (atomic number 15) contains 18 neutrons/ 18 protons.
How many protons and neutrons are in an atom of 31p?
So, this element has 15 protons (atomic number), 15 electrons, and 16 neutrons (mass number minus atomic number). This isotope is phosphorus-31, which has atomic number 15.