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the mass number is determined on the number of protons and neutrons in the nucleus of the atom.
Velda Stokes
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∙ 15y agoAn elements relative Atomic Mass number is the number of protons and neutrons in the nucleus combined, eg. in helium, which has a mass number of 4, there are 4 neutrons and protons PUT TOGETHER. It is known as the relative atomic mass because protons and neutrons weigh roughly the same, whereas electrons weigh a negligible amount, and if we refer to each proton and neutron as having one mass, then the mass is just the number of protons and neutrons.
Wiki User
∙ 12y agothe mass number is determined on the number of protons and neutrons in the nucleus of the atom.
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How do you determine an atom's mass number?
mass number= no. of protons + no. of neutron
What is counted in an atom to determine mass number?
NEUTRONS AND PROTONS are counted in an atom to determine it's mass number.
What does the number of neutrons determine?
they determine the atomic mass of the atom
What does a mass number determine?
mass number = number of protons + number of neutrons DIFFERENT FROM ATOMIC MASS atomic mass = weighted average of all the isotopes of that element
What does the mass number determine?
The Number Of Protons & Neutrons In An Atom.
Can the mass number of an element be used to determine the number of electrons in an atom?
No. The mass number can be used, however, to determine the number of neutrons. Electrons can only be determined by knowing the atom's charge.
How do you determine neutrons in element?
subtract the atomic number from the mass number
How do you determine the number of nuetrons in an atom?
Number of Neutrons = Mass number - Atomic Number
Can you use the mass number of an element to determine the number of electrons in an atom?
Mass number = number of protons + number of neutrons Number of electrons = number of protons = mass number of an isotope - number of neutrons
Is it true that the mass number can be used to determine the number of electrons in an atom?
no --- atomic number
How you can determine the number of protons electrons and neutrons an atom has from an atom's mass number and its atomic number?
To determine the number of protons, look at the atomic number. The number of electrons is also the atomic number.To find the number of neutrons subtract the atomic number from the Atomic Mass number.
What must you know about an atom to determine its mass number?
The number of protons and neutrons in its' nucleus.
