0
The mass number minus the atomic number is the number of neutrons in an atom. The atomic number is both protons and electrons.
Boron, atomic number 5, has two naturally occuring isotopes with mass numbers of 10 and 11, 10B, 11B. The number of neutrons in each is 5 and 6 respectively. The percentage occurence is roughly 20%, 80% respectively. This gives rise to the fractional atomic mass.
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoThe mass number (A), also called atomic mass number (not to be confused with atomic number (Z) which denotes the number of protons in a nucleus) or nucleon number, is the number of protons and neutrons (also defined as a less commonly known term,nucleons) in an atomic nucleus.
Please see the Related Link provided below, for more information.
Wiki User
∙ 12y agoatomic number is the number of protons in an atom
mass number is the number of protons plus neutrons in an atom
therefore, the mass number minus the atomic number is equal to the number of neutrons
Wiki User
∙ 15y agoThe sum of the mass number and the atomic number (A+Z) for an atom corresponds to the total number of subatomic particles present in the atom (protons, neutrons, and electrons).
Wiki User
∙ 14y agoIf you subtract the mass number by the atomic number you get the number of neutrons.
Wiki User
∙ 11y agothat doesn't give anything.
however atomic number (or number of protons) plus number of neutrons gives mass number
Wiki User
∙ 12y agoWiki User
∙ 12y agoThe number of neutrons in the atom.
Add your answer:
Earn +20 pts
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.
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 formula for finding the amount of neutrons in an element?
The number of neutrons equals the atomic mass (MA) minus the atomic number (XA). (#neutrons=MA-XA). The neutrons can be calculated in this manner because neutrons hold significant mass in the atom. The molar mass featured for a particular element in periodic tables is actually the average of the atomic masses of the elements' numerous isotopes (elements with extra neutrons than normal). So, by subtracting this mass by the atomic number (the number of protons), you will get a value that is very close to actual number of neutrons for that average element.
How many neutrons does a cesium 141 have?
The atomic number of cesium is 55. The number of neutrons is the isotope mass number minus atomic number, or in this instance 86 neutrons.
How do you calculate how many neutrons there are in an atom?
The number of neutrons in an atom is easily calculated by taking the mass number and subtracting the atomic number. Take for example, Uranium: the mass number on the periodic table is 238, while the atomic number is 92. Take the difference of 238 and 92 and that will be equal to the number of neutrons. 238-92=146
How do you get number of neutrons?
Atomic mass minus the atomic number.
The mass number minus the atomic number?
If you subtract the mass number by the atomic number you get the number of neutrons.
What is atomic mass number minus protons?
atomic mass number - protons = number or neutrons
What is the difference between atomic mass unit and atomic mass?
Atomic mass unit is the number on the bottom of the Chemical. However, the atomic mass is the number on the top of the chemical minus the number on the bottom. b.t.w The no. of neutrons = top no. minus bottom no.
What does the formula atomic mass minus the atomic number equal?
By subtracting the mass number and the atomic number, the number of neutrons can be calculated.
Is The number of protons is equal to the atomic mass minus the atomic number.?
false
How do you know the number of neutrons an atom has?
You subtract the atomic number from the mass number.
How do you find the number of nutrons in an atom?
Find out how many protons (atomic number) and what the mass number of a particular element is. Then subtract the number of protons from the rounded mass number to get the number of neutrons in a particular atom.
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 can the number of proton neutron and electron be calculated to get atomic number and atomic mass?
atomic number is the amount of protons, equal to the atomic number, the electrons, minus the mass number atomic number is the amount of protons, equal to the atomic number, the electrons, minus the mass number atomic number is the amount of protons, equal to the atomic number, the electrons, minus the mass number
What is the atomic mass minus the number of neutrons?
The number of protons, also called the atomic number.
How do you you work out the number of neutrons in an atom?
Atomic Mass minus atomic number
