What is the mass of protons and nuetrons?
5 billion atom KMc for protons and 4 trillion atom KMc for nuetrons Proton: 5 billion KMc Nuetron: 4 trillion KMc
most of the time there are two but if you have a positively charged atom there are just more protons than electrons or neutrons MASS IS ALWAYS PROTONS PLUS NUETRONS SO IF YOU KNOW THE MASS # AND THE NUETRON # AND SUBTRACT NUETRONS FROM MASS YOU GET THE PROTON # ALSO THE PROTON # = TO THE ELECTRON # AND THE ATOMIC #
The number of protons for any element is the atomic number. The number of electrons is equal to the number of electrons. To find the number of nuetrons you must subtract the atomic number from the mass number mass number-atomic number= number of nuetrons protons=electron the number of protons in the element aluminum is 13. The number of electrons is 13.