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When determining the number of neutrons in an atom do you round the atomic mass to its nearest whole number?
Wiki User
∙ 13y ago
We don't round off atomic masses. The averaged Atomic Mass depends on the proportions of the various isotopes of that element.
In this case, the element is hydrogen, which normally has an atomic mass of 1. Most hydrogen atoms have a single proton and no neutrons, so a total of 1. There's an isotope of hydrogen sometimes called "heavy hydrogen" or "deuterium", which has one proton (which makes it hydrogen) but which also has one neutron, for an atomic mass of 2.
You can probably calculate how many "1"s you need to include for each "2" to make the average 1.0079. It's a bunch.
There's an even heavier isotope called "tritium", which has one proton and two electrons, for an atomic mass of 3. Tritium is radioactive, and does not occur in nature except as a product of radioactive decay.
Wiki User
∙ 8y ago
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How do the numbers of protons, number of neutrons, and the mass number related?
mass no. = no. of protons + no. of neutrons
How is the number of neutrons in an atom found?
The number of neutrons can be calculated if the atomic number and mass number of an element is known. The number of neutrons = Mass number - atomic number.
Are the number of neutrons equal to the atomic number minus the atomic mass?
false
What does atomic mass do?
The atomic mass is equal to the number of protons plus neutrons. So if you know the atomic number then you can find out the number of neutrons Atomic # is the amount of Protons or Electrons Atomic Mass- Number of protons plus neutrons Atomic Mass-Atomic Number = Amount of neutrons
How many different isotopes of erbium are there?
The formula is Atomic Mass (rounded to the nearest whole number) minus the Atomic Number. This works because Protons and Neutrons have virtually the same mass, and electrons virtually none. As well as the Atomic Number being equal to the amount of Protons. Essentially: Protons + Neutrons - Protons = Neutrons. Basic Prealgebra. So to find the amount of Neutrons in Erbium: Erbium's Atomic Mass rounded (167) - Erbium's Atomic Number (68) = approx. 99 Neutrons
How do you find the number of nucleons?
To find the number of neutrons in an atom, first find the atomic weight of the element and round that number to the nearest whole number. Then, find the atomic number of the element. Subtract that number from the atomic weight and the number of neutrons will be found.
How can you figure out how many neutrons are in an atoms nucleus by using the atomic number and the atomic mass?
The atomic mass (rounded to the nearest whole number) is the number of nucleons - i.e. protons+neutrons. The atomic number is just the number of protons. So the difference between the two (mass minus number) tells you the number of neutrons.
What is the rule for determining the mass number of an atom or ion?
The mass number is the sum of number of protons and neutrons in the atomic nucleus.
How do you get the number of protons electrons and neutrons from the atomic mass number and atomic number?
Number of protons = atomic number Number of neutrons = Atomic Mass (rounded to the nearest whole number) minus the atomic number Number of electrons in a stable element = number of protons Number of electrons in an unstable element = atomic number minus the charge
How do you compute the neutrons of carbon?
Roughly, subtract the atomic number (6) from it's atomic mass (12.01) and round to the nearest integer to get the average number of neutrons in a carbon sample, in this case 6.
How do you determine the number of protons electrons and neutrons present in an element by identifying its atomic and mass numbers from the periodic table?
Atomic number means number of protons present in an atom. Atomic number= number of protons. mass number = number of neutrons+ number of protons. So if you subtract the number of protons you get neutrons and if you subtract neutrons you get protons. mass number - protons= neutrons Mass number - neutrons = protons.
What is the number of neutorns in nitrogen?
To find the number of neutrons, all you need to do is round the atomic weight to the nearest whole number. The atomic weight of nitrogen is 14.007, or about 14. The atomic weight is basically the average number of particles in an atom's nucleus. What particles are located in the nucleus?? The protons and the neutrons. So, all you have to do is subtract the number of protons from the atomic weight and you get the neutrons!!HERE'S HOW YOU DO IT:Nitrogen's atomic # = 7Nitrogen's atomic mass = 14Neutrons + Protons = Atomic Mass so... 14-7=7The number of neutrons is 7.
The number of neutrons are equal to to the?
Typically to find the number of neutrons, you first round the atomic mass to the nearest whole number. After that to you subtract the number of protons (which is the same as the atomic number) from the newly rounded atomic mass and the resulting number is the number of neutrons. lets use Carbon for example: Atomic mass: 12.01 Atomic mass rounded: 12.00 Number of Protons (same as atomic number): 6 (Rounded atomic mass - number of protons)=6 So Carbon has 6 neutrons. Hope that is easy enough to understand.
How do the numbers of protons, number of neutrons, and the mass number related?
mass no. = no. of protons + no. of neutrons
How is the number of neutrons in an atom found?
The number of neutrons can be calculated if the atomic number and mass number of an element is known. The number of neutrons = Mass number - atomic number.
What does mass do?
The Atomic Mass is equal to the number of protons plus neutrons. So if you know the atomic number then you can find out the number of neutrons Atomic # is the amount of Protons or Electrons Atomic Mass- Number of protons plus neutrons Atomic Mass-Atomic Number = Amount of neutrons
Are the number of neutrons equal to the atomic number minus the atomic mass?
false
