Question

Number of electrons, protons and neutrons in 31p15

Answer 1

electronic configuration 2+8+5

protons 15

neutrons 16

Answer 2

In 31p15, the number of proton, electron and neuton is as follows:

Proton = 15, electron = 15, neutron = 16.

This is because the 31 is the mass number of Phosphorus and 15 is the atomic number. The atomic number is equal to the number of protons.

Phosphorus is an electrically neutral element thus number of protons is equal to number of electrons. The number of neutrons is equal to the mass number minus the number of protons, so 31-15 = 16.