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How can you determine the number of neutrons in an atom if its mass number and its atomic number are known?
Wiki User
∙ 7y ago
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.
Wiki User
∙ 15y ago
Wiki User
∙ 14y agoIf you know the atomic number and the mass number, you can simply determine the number of neutrons using this formula:
Mass number = (number of protons) + (number of neutrons)
Or,
Number of neutrons = (mass number) - (number of protons)
All you have to remember is that the atomic number is the number of protons an atom contains.
Wiki User
∙ 11y agoThe atomic number when subtracted from the atomic mass will give the number of neutrons in an atom.
Atomic Mass - Atomic Number = Number of neutrons.
Explanation: The atomic mass of any atom is the sum of protons and neutrons which are present in the nucleus of the atom.
The atomic number of any atom gives the number of protons in the atom and also gives the number of electrons (Only if it is a neutral atom ,i.e., when it is not an ion).
Thus, The number of neutrons can be calculated by subtracting the atomic number from the atomic mass.
Wiki User
∙ 11y agoSubtract the atomic number from the mass number.
Wiki User
∙ 12y agoNumber of Nuetrons = Mass Number - Atomic Number
E.g. Einsteinium (Mass Number) 252 - (Atomic Number) 99 = 153 Neutrons
Or just look at how many protons and neutrons are in it.
Wiki User
∙ 14y agoFalse.What you have ot do is look at the atomic # and you subract that by your atomic mass.
Wiki User
∙ 15y agonumber of neutrons is equal to mass number - atomic number.
Wiki User
∙ 7y agoWhat you do is that you take the mass number and the atomic number and subtract them to get the number of neutrons.
Wiki User
∙ 13y agoThe number of neutrons is equal to the numerical difference between the mass number and the atomic number.
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How can the number of protons electrons and neutrons be calculated when giving the mass number?
The atomic number must be known along with the mass number. Then the number of protons or electrons is the same as the atomic number, and the number of neutrons is the difference between the mass number and the atomic number.
How do you determine electron density given atomic density?
The electron density is simply deduced from the atomic density as follows : if ne denotes the electron density and na the atomic density then : ne= z na with z being the number of valence electron per atom.
How many neutrons and protons are there in an atom?
The number of protons is equivalent to the atomic number which can be got from the periodic table. The number of neutrons is the atomic weight minus the number of protons. Again, this information is available from the periodic table.
What is the sum of protons and neutrons known as an element?
Sum of protons and neutrons is the Mass number of the element. The number of protons is equal to the number of electrons. Neutrons and protons are sub atomic particles.
Sn isotope of oxygen has an atomic number of 8 and an atomic weight of 18. how many neutrons does it have?
The atomic number of an isotope is the number of protons it contains, whereas the mass number is the total mass of the nucleus, which is the combined number of protons and neutrons in the nucleus. To find the number of neutrons, you must therefore subtract the atomic number of the isotope from the mass number of the isotope.In the above example, the atomic number is 8 and the mass number is 18. This isotope is known as O18. The number of neutrons in the isotope is: Mass number - Atomic number = Number of neutrons18 - 8 = 10
What info could you use to determine the atomic number of an unknown element that has a mass number of 22?
In order to answer this, the number of neutrons must also be known. Subtract the number of neutrons from the mass number and the result is the atomic number. mass no. - no. of neutrons = atomic number (no. of protons)
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 information can you gather knowing the atomic number and mass of an element?
If you know the atomic no. and atomic mass, then the no. of electrons, no. of protons and no. of neutrons can also be determined. Atomic No.=No. of electrons = No. of protons. No. of neutrons=Atomic mass-Atomic no. Also, by no. of electrons you can determine its valency and the no. of valence electrons.
Total number of protons and neutrons in the atom is?
The total number of neutrons in an atom is known as its atomic mass. The sum of all the atomic weights of isotopes of a particular element is known as an element's atomic weight. Atomic weights are decimal numbers for this reason.
What is fluorine's number of neutrons?
Neutrons have the same mass as a proton but lack an electrical charge. The number of neutrons can be found by subtracting the atomic number, or number of protons in the atom, from the atomic weight. This is calculated this way because the atomic weight represents both the number of protons and neutrons. Fluorine's atomic number is 9 and its atomic weight is 18.998, so 18.998-9= 9.998. Consequently, 9.998 is fluorine's number of neutrons.
What is the sum of the protons and nuetrons in an atomic number?
atomic number is the number of protons. the sum of protons and neutrons is known as mass number
What is indicated by the sum of protons and the neutrons?
By the sum of protons and neutrons we obtain the mass number of the atom which is written at the top of the atom periodic number. We can also obtain the mass number by adding the atomic number and the number of neutrons because the atomic number and the number of protons are same. You know that scientists have discovered some particles which are smaller than protons and neutrons and these are known as quartz.
How can the number of protons electrons and neutrons be calculated when giving the mass number?
The atomic number must be known along with the mass number. Then the number of protons or electrons is the same as the atomic number, and the number of neutrons is the difference between the mass number and the atomic number.
How many nuetrons does an einsteinium element have?
99 protons 99 electrons Number of neutrons = Atomic mass of an isotope - Atomic number of the element Einsteinium's atomic number is 99 but Es has 19 known isotopes.Einsteinium has 99 protons.
How do you determine electron density given atomic density?
The electron density is simply deduced from the atomic density as follows : if ne denotes the electron density and na the atomic density then : ne= z na with z being the number of valence electron per atom.
How many neutrons and protons are there in an atom?
The number of protons is equivalent to the atomic number which can be got from the periodic table. The number of neutrons is the atomic weight minus the number of protons. Again, this information is available from the periodic table.
The atomic mass is equal to the sum of?
The Atomic Mass number of an element is the sum of the protons and neutrons in the nucleus of an atom of that element.The relative atomic mass is the average atomic mass number of all the known isotopes of an element.
