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If I remember right, from my chemistry class, I think the mass number is the mass of the atom.
Electrons have negligent mass- they aren't big enough to make a significant difference in the counting, so they aren't counted.
Protons have a mass of 1 each. They are attracted to electrons.
Neutrons also have a mass of about 1. They have no particular attraction, but they will connect to protons in the atom's nucleus (as long as there aren't too many, depending on the amount of protons), and increase the mass by 1 each.
So, the mass number should be the number of neutrons+ the number of protons. (The electrons are about a 2000th of that mass)
What else can I help you with?
Does the number of neutrons equal the mass number?
no, the mass number is number of protons in an atom, plus the number of neutrons.
Are the number of neutrons equal to the atomic number minus the atomic mass?
false
Atomic mass is equal to what?
atomic mass unit is equal to one-twelfth of the mass of a carbon-12 atomic mass is equal to one-twelfth of the mass of a carbon-12Atomic Mass is equal to the number of protons and neutrons.
What is the number of neutrons equal to What minus what?
The number of neutrons in an atom is equal to the mass number minus the atomic number. The mass number is the total number of protons and neutrons in the nucleus, while the atomic number represents the number of protons. Therefore, the equation can be expressed as: Neutrons = Mass number - Atomic number.
What is the number of neutrons is equal to What minus what?
The number of neutrons in an atom is equal to the mass number minus the atomic number. The mass number represents the total number of protons and neutrons in the nucleus, while the atomic number indicates the number of protons. Therefore, the formula can be expressed as: Neutrons = Mass Number - Atomic Number.
What equals the number of neutrons plus the number of protons in an atom?
The sum of the number of protons and neutrons in an atom is known as the atomic mass. It is equivalent to the mass number of the atom, which represents the total number of protons and neutrons in the nucleus.
What do you add to protons to equal mass number?
The mass number = protons + neutrons
What is the sum of protons and neutrons in an atom?
Mass number!:)
The mass number of an elements is equal to?
the total number of protons and neutrons in the nucleus.
What number is the atomic mass equal to?
The atomic mass of an element is equal to the sum of the number of protons and neutrons in its nucleus. It is not directly related to the atomic number, which represents the number of protons in an atom.
What equal to the number of protons and neutrons in an atom?
mass number
What is equal to the total number of protons and neutrons?
If you add the number of protons to the number of neutrons in an atom, you have calculated that atom's atomic mass.
