Atomic number = Number of protonsMass number = Number of protons + Number of neutrons.
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∙ 2013-03-26 16:22:47The number of neutrons is the difference between mass number and the number of protons.
Atomic mass is simply the sum of the number of protons and the number of neutrons. If an atom has "A" protons and "B" neutrons, its atomic mass is A + B.
Simply take the atomic mass (number of protons and neutrons) and subtract the atomic number. (number of protons)
Helium-6 has two protons and electrons and four neutrons.
Add the number of protons and neutrons, to get atomic mass number.
The number of protons is given to you-- it's the atomic number. The number of electrons always equals the number of protons. To calculate the number of neutrons, subtract the number of protons from the atomic mass number given.
The number of neutrons is the difference between mass number and the number of protons.
In the neutral atom the number of electrons and protons is equal to the atomic number.The number of neutrons is mass number-number of protons.
equal to number of protons
Protons = element numberNeutrons = mass number of isotope - element number
Atomic mass is simply the sum of the number of protons and the number of neutrons. If an atom has "A" protons and "B" neutrons, its atomic mass is A + B.
The number of protons and neutrons in the nucleus
Simply take the atomic mass (number of protons and neutrons) and subtract the atomic number. (number of protons)
Helium-6 has two protons and electrons and four neutrons.
Mass number 19 means a total of 19 protons and neutrons. If it has 10 neutrons, that leaves 9 protons, which is Fluorine.
The number of protons and the number of neutrons.
Add the number of protons and neutrons, to get atomic mass number.