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its simply just the mass. for every amount of protons theres a nuetron, like in hydrogen theres only 1 proton and no nuetrons because its mass shows as 1. Also the electrons is not included in the mass due to the fact of they are so small. Lets say an electron is the size of an orange, a proton would be a football stadium. So if an object has a mass of 50 it has 25 protons and 25 nuetrons usually. so really its basically thenumber divided by 2.

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13y ago

Look up the atomic number in any Periodic Table (of the Elements). That is the number of electrons or protons -- they are equal in number. Neutrons are more difficult, since there can be more than one isotope, and the atomic weight represents the average of the masses of commonly- found isotopes. Normally the number of neutrons doesn't matter. But, if you need the exact number of neutrons, you must specify a particular isotope, then subtract the atomic number from the mass number (for that specific isotope).

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Q: How do you figure out the number of protons neutrons and electrons in an atom?
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How do you figure out protons electrons neutrons?

Find the atomic number. That tells you the number of protons and electrons (in a neutral atom). Then find the atomic weight. The number of protons plus the number of neutrons will equal the atomic weight. So if you know the wt. just subtract the number of protons and you will have the number of neutrons.


What are the number of protons neutrons and electrons in an element?

Number of protons = Number of electrons = Atomic number Number of neutrons = Atomic number - Number of protons


How many protons neutrons and electrons in 40Ca plus 2?

I don't want to do your homework for you. Here's how you figure it out: Protons = atomic number Neutrons = atomic mass - atomic number Electrons = atomic number + ionization


Do electrons equal the sum of the number of neutrons and protons in an isotope?

No. The number of neutrons has no affect on the number of protons and electrons.


What is the number of neutrons electrons and protons in nitrogen14?

there are 7 neutrons, 7 protons, and....----electrons


How many protons electrons and neutrons does americium have?

Americium has 95 protons and electrons. Number of neutrons: atomic mass of an isotope - number of protons


What is the number of protons plus the number of electrons?

The number of protons plus the number of electrons isn't a recognized figure in chemistry. The number of protons is the atomic number of an element. The number of electrons is the same as the number of protons except when the element is an ion. An ionic compound results in one or more electrons moving from one element to another element. Although this is a simplification, it can be described as the atom gaining or losing electrons. The number of protons plus the number of neutrons is the atomic weight of an element.


Determine the numbers of electrons protons neutrons 80 35 Br?

Number of Protons: 35 Number of Neutrons:45 Number of Electrons:35


How many electrons protons and neutrons are in uranium?

Uranium isotopes have 92 protons and electrons; the number of neutrons is different for each isotope.Number of neutrons = Mass number - Number of protons


What is neons number of protons electrons neutrons?

Protons: 10 Electrons:10 and Neutrons: 10.


LList the number of protons electrons and neutrons in americium?

Americium has 95 protons and electrons. Number of neutrons: atomic mass of an isotope - number of protons.


How many protons electrons and neutrons does an atom have?

Americium has 95 protons and electrons. Number of neutrons: Atomic Mass of an isotope - number of protons