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What equals the number of neutrons plus the number of protons in an atom?
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∙ 14y ago
The mass number is a whole number that is equal to the sum of protons and neutrons in an atom. Mass number is represented by the letter (A) or
A= Z + N (Z) represent the atomic number or the number of protons in the nucleus.
Wiki User
∙ 14y ago
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∙ 15y agoWiki User
∙ 13y agoThe atomic mass- how much the atom weighs in terms of protons and neutrons.
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∙ 11y agoIt is equal to the mass number of the atom.
Wiki User
∙ 14y agoThe number of protons + electrons are equal.
The number of protons + neutrons equal the mass number
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∙ 14y agoAn atom's mass number is the number of protons plus neutrons.
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∙ 11y agoThe number of protons plus the number of neutrons is the mass number for a particular isotope of an element.
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∙ 14y agoMass Number.
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The sum of the protons and neutrons in an atom equals the .?
atomic number
How many protons and neutrons are there in the nucleus of an atom that has an atomic number of 84 and a mass number of 210?
84 protons, the same as the atomic number, and (210 - 84) or 126 neutrons. The numbers of protons and neutrons together equals the mass number.
The number of neutrons plus protons in the nucleus of an atom-?
nass number is the number of neutrons plus protons in the nucleus of an atom
In a neutral atom the number of electrons equals the number of what?
The number of electrons should equal the number of protons, otherwise you have an ion.
The mass number of an atom indicates the number of what?
The mass number is the sum of protons + neutrons.
The sum of the protons and neutrons in an atom equals the .?
atomic number
The mass of an atom is eaual to?
The mass of an atom equals to the number of protons and neutrons.
What is the sum of the protons and neutrons in an atom equals to?
The nucleon number (or mass number).
Atomic mass equals the number of what?
The atomic mass NUMBER equals the number of protons and neutrons in an atom. DO NOT confuse this with the mass of an atom.
In an atom the number of proton equals the number of neutrons?
In a neutral atom, the number of protons equals the number of electrons; it may or may not also equal the number of neutrons.
What is the Mass number of helium atom that has two protons and two neutrons?
4 because the mass number equals protons plus neutrons. Which is 4.
How many protons and neutrons are there in the nucleus of an atom that has an atomic number of 84 and a mass number of 210?
84 protons, the same as the atomic number, and (210 - 84) or 126 neutrons. The numbers of protons and neutrons together equals the mass number.
What is the difference the atomic number of 6 of an atom and it's mass number?
If the atomic number of an atom is 6 it means that the atom has 6 protons, the mass number on the other hand is the total amount of protons and neutrons in the atom. ( Remember- the amount of protons equals the amount of electrons). So for example if you wanted to find out the amount of neutrons in an atom, you would subtract the atomic number from the atomic mass for the answer. (Whole-protons=neutrons)
The number of neutrons plus protons in the nucleus of an atom-?
nass number is the number of neutrons plus protons in the nucleus of an atom
What is the total amount of protons and neutrons in an atom?
The total amount of protons and neutrons in an atom is its mass number.
What are the two particles found inside the nueclus of the atom?
They are protons and neutrons. Electrons are around them
In a neutral atom the number of electrons equals the number of what?
The number of electrons should equal the number of protons, otherwise you have an ion.
