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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.
If a sodium atom has 11 protons and 12 neutrons what is its mass number?
The mass number of an atom is the sum of its protons and neutrons. In this case, the mass number of the sodium atom with 11 protons and 12 neutrons would be 23.
The mass number is used to calculate the number of what?
The number of protons and neutrons in the nucleus
What do you get if you subtract the atomic number from the mass number for a particular atom?
You get the number of neutrons in the atom. The mass number represents the total number of protons and neutrons in the nucleus, while the atomic number represents the number of protons. Subtracting the atomic number from the mass number gives you the number of neutrons because the difference accounts for the protons.
The mass number of an atom of calcium with 20 protons and 20 neutrons is?
The mass number of an atom is the sum of the protons and neutrons in its nucleus. Therefore, for an atom of calcium with 20 protons and 20 neutrons, the mass number would be 40.
What is the number of neutrons in Tungsten with atomic mass 184?
Tungsten's atomic number is 74, which means it has 74 protons. To find the number of neutrons, subtract the atomic number from the atomic mass: 184 (atomic mass) - 74 (atomic number) = 110 neutrons in Tungsten.
What is the sum of protons and neutrons in an atom?
Mass number!:)
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.
What is the mass number of 10 protons and 10 neutrons?
20. the mass of an atom is determined by the sum of the number of neutrons and protons the atom has.
Is the number of neutrons in an atom known as its mass number?
No, neutrons + protons = mass
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.
How is the number of neutrons in an atom found?
The number of neutrons in an atom can be found by subtracting the number of protons (which is the atomic number) from the mass number. The mass number is the sum of protons and neutrons in the nucleus of an atom.
Atomic mass is determined by the number of protons plus the number of?
neutrons in an atom's nucleus. It is measured in atomic mass units (amu) and provides the total mass of an atom. The atomic mass is approximately equal to the sum of the protons and neutrons in the nucleus, as the mass of electrons is negligible.
The mass number of an atom indicates the number of what?
The mass number is the sum of protons + neutrons.
Which subatomic particles makes up most of the mass off the atom?
The major contribution to the mass of an atom is from protons and neutrons; electrons have a known but negligible mass.
What is the number of an atom with 5 protons and 7 neutrons?
To the find the mass number of an atom you add the protons and neutrons. Meaning that the mass number of this atom is 12.
What is the mass number of a sulfur atom with 17 neutrons?
S with 17 neutrons and 16 protons has a mass number of 33 amu
