Write the correct representation of an element ‘x’ which contains 15 electrons and sixteen neutrons?

Question: Write the correct representation of an element ‘x’ which contains 15 electrons and sixteen neutrons?

If you look at the periodic table then you will see phosphorus has 15 electrons and protons and 16 neutrons. Atomic structure phosphorus has 15 protons and 16 neutrons in its nucleus giving it an atomic number of 15 and a atomic mass of 31. Phosphorus is in period 3 of the periodic table because it has 3 electron shells .