Question

determine the number of protons, neutrons, and electrons in the atom using the atomic symbol: 31 p 3-. how many neutrons (n^0) are in the atom? answer

Explanation:

Step1: Identify element and atomic number

Phosphorus (P) has atomic number 15. Protons = atomic number, so protons = 15.

Step2: Determine number of neutrons

Mass number = 31. Neutrons = mass number - protons. So neutrons = 31 - 15 = 16.

Step3: Calculate number of electrons

The ion has a 3 - charge. Electrons = protons+3. So electrons = 15 + 3=18. But we are asked for neutrons.

Answer:

16