Carbon-14 has 6 protons and 8 neutrons. The mass of one neutron is approximately 1.0086649 Atomic Mass units (u). Therefore, the total mass of neutrons in 7 mg of Carbon-14 can be calculated by multiplying the number of neutrons (8) by the mass of one neutron to get approximately 8.0693192 mg.
The mass number
mass number
no. of protons+no. of nuetrons in an atom is known as mass no. of that atom.while no . of protons present in an atom is called its atomic no.thus, in 1st condition we consider both, no. of protons as well as no. of nuetrons and in the 2nd condition we just consider no. of protons.
Each isotope has a different number of neutrons.Number of neutrons = Mass number of an isotope - 91
Looking at a periodic table, you see Al is number 13. It has 13 protons in the nucleus,so to have a total mass number of 24, it must have 11 nuetrons. Mass number = # protons + # nuetrons
Carbon is a non metallic element. Mass number of it is 12.
== The equation of atomic mass is protons+nuetrons== atomic mass. ===
because the electrons plus the nuetrons equal the mass
protons and nuetrons
The mass number
To calculate the atomic mass of an element, add up the mass of protons and nuetrons.
mass number = protons + nuetrons
it has 35 nuetrons, 30 protons, and 30 electrons with a mass of 65
mass number
The Mass Number.
The mass number = the number of protons + the number of nuetrons. Each of these particles is considered to have a mass of 1 amu. (atomic mass unit) For example, Aluminum has 13 protons and 14 nuetrons, so it's mass number = 27.
Number of neutrons = Atomic mass of the isotope - 87