determine the number of protons, neutrons, and electrons in the atom using the atomic symbol: 31 p 3-. how…
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
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