0
What is the mass number of an atom with 19 protons and 20 neutrons?
Wiki User
∙ 6y ago
Add your answer:
Earn +20 pts
What is the sum of protons and neutrons in an atom?
Mass number!:)
What is the mass number of 10 protons and 10 neutrons?
The mass number of an atom is the total number of protons and neutrons in its nucleus. Therefore, an atom with 10 protons and 10 neutrons would have a mass number of 20.
What particles make up the mass of an atom?
The number of protons
The mass number of an atom indicates the number of what?
The mass number of an atom indicates the total number of protons and neutrons in the atom's nucleus.
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 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.
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.
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.
What is the sum of protons neutrons in an atom?
Mass number = Protons+Neutrons
The mass number of an atom of calcium with twenty protons and twenty neutrons?
The mass number of an atom of calcium with twenty protons and twenty neutrons is 40. This is because the mass number is the sum of the protons and neutrons in the nucleus of an atom.
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.
Is the number of neutrons in an atom known as its mass number?
No, neutrons + protons = mass
