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Calcium has an atomic mass of an atomic number of 20 so the number of neutrons must be?
Wiki User
∙ 14y ago
The number of neutrons is different for each isotope of an element:
Number of neutrons of an isotope = Atomic Mass of the isotope - atomic number of the element
Calcium has also 20 protons and 20 electrons.
Wiki User
∙ 14y ago
Wiki User
∙ 13y ago20 electrons because an atom is electrically neutral
Wiki User
∙ 13y agon=m-p,
So mass= 40 minus 20 protons = 20 neutrons
Wiki User
∙ 11y agoneutrons= 20
Wiki User
∙ 15y agomust be 20
Wiki User
∙ 13y ago20 apex
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In order to calculate the number of neutrons you must subtract the from the?
Number of neutrons = Mass number - atomic number
How do you know the number of neutrons an atom has?
You subtract the atomic number from the mass number.
How many neutrons are contained in an iodine nucleus with a mass number of 132 and an atomic number of 53?
79; the mass number is the sum of the protons and neutrons, and the atomic number is the number of protons. So if you take the mass number (protons + neutrons) minus the atomic number (protons), you get the number of neutrons.
What do you get if you subtract the atomic number from the mass number for a particular atom?
mass no - atomic no = number of neutrons in an atom.
How can you find the nucleus with no mass number?
you cant get the # of neutrons if there is no atomic mass because you have to subtract the atomic # from the atomic mass #. so there is no way that u can find the # of neutrons without the atomic mass it is needed!
What is an element with 20 neutrons?
Calcium-40: The atomic number of calcium is 20 and the number of neutrons is always the difference between the atomic mass and the atomic number.
How many neutrons calcium?
The number of neutrons is the difference between the Atomic Mass of an isotope and the atomic number of the element; each isotope of calcium has a different number of neutrons. See the link below for calcium isotopes.
How many protons neutrons and electrons are in an atom of calcium-42?
Calcium has atomic number 20, which means that all calcium atoms have 20 protons in their atomic nuclei. Neutral calcium atoms also have 20 electrons. Isotopes of calcium vary in the number of neutrons in their atomic nuclei, and are named for their mass number, which is the sum of the protons and neutrons in the nucleus. You can calculate the number of neutrons (N) in an isotope by subtracting the number of protons (atomic number) from the mass number. N = 42 - 20 = 22, therefore, a calcium-42 isotope has 20 protons, 20 electrons, and 22 neutrons.
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 neutrons does Calcium - 45 have?
The answer to this type of question may always be found by subtracting the atomic number from the atomic mass. For calcium 45 - 20 = 25 neutrons.
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
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.
How many protons does calcium 47 have?
mass number = number of protons + number of neutrons. 47 = 20 + neutrons, so neutrons equal 27.
How many neutrons does calcium-40 have?
Number of neutrons = mass number - atomic number = 40 - 20 = 20 neutrons
How can you determine the number of neutrons in an atom if its mass number and its atomic number are known?
It is impossible to determine the number of neutrons from the mass number and atomic mass, since the two are essentially same value. However, with the atomic number and the mass number, one can calculate the number of neutrons by subtracting the atomic number from the mass number.
What number is the atomic mass equal to?
Atomic mass is the number of protons and neutrons in an atom.
How do you find the number of neutrons from the mass number?
Atomic mass is the number of protons in an atom mass number is the number of protons plus neutrons in an atom the number of neutrons would equal the mass number minus the atomic number.
