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Its the number of neutrons plus the number of protons where as atomic number is just the number of protons.
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∙ 14y ago
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What is the mass number of a atom?
the mass number is number of protons in an atom, plus the number of neutrons.
What do you get if you subtract the atomic number from the mass number for a particular atom?
mass no - atomic no = number of neutrons in an atom.
If an atom has an atomic number of 8 and a mass of 18 how many protrons are in the atom?
It has 8 protons. The atomic number of an atom = the number of protons. The mass number is not needed in this problem. The mass number is the number of protons + number of neutrons.
Mass number used to calculate the number of?
the mass number of an atom is used to calculate the number of neutrons and protons in the nucleus of an atom
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 do you get when you change the mass number of an atom?
You can't change the mass number of an atom because the mass number is the number of protons which is the atom's atomic number I hope this helped :)
What is the mass number of a atom?
the mass number is number of protons in an atom, plus the number of neutrons.
What is the number of neutrons in an atom affects the atomic what?
The number of neutrons in an atom can affect the atomic mass of an atom.
Is atomic number the same as mass number?
Atomic number is the number of protons in the atom; atom mass is the total mass of the atom (usually neglecting the mass of the electrons because they have so little).
What does the mass number of an atom tell you about the atom?
The mass number tells us the number (the sum) of protons and neutrons in the nucleus of an atom.
What do you get if you subtract the atomic number from the mass number for a particular atom?
mass no - atomic no = number of neutrons in an atom.
Why atomic mass is different from the mass numbers?
atomic mass is the number of protons in an atom mass number is the number of protons plus neutrons in an atom
What does the atomic mass number of an atom tell you about the atom?
The mass number of an atom is equal to the sum of its number of protons and neutrons, simply, nucleons.
What does the atomic mass number an atom tell you about the atom?
The mass number of an atom is equal to the sum of its number of protons and neutrons, simply, nucleons.
In an atom what determines the mass number?
The atomic mass number is the sum of the protons and neutrons in an atom.
How is the mass number of a atom indicated?
The mass number is the sum of protons and neutrons in the nucleus of an atom.
What mass number is calculated by adding the numbers?
the mass number of an atom is the number of protons in an atom, plus the number of neutrons.
