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What is the mass number of an atom that has 12 neutron and 11 protons?
Wiki User
∙ 8y ago
The mass number would be 23 and the atomic number 11 making it sodium.
Ferne Streich
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What is atomic mass A and neutron number N for given atom?
Atomic mass is the number of protons and neutrons that make up an atom. The neutron number is only the number of neutrons present in the atom. This can be found by subtracting the number of protons from the atomic mass.
Which subatomic particle causes the mass number to change but has no effect on the identity of the element?
We make atomic number by number of protons in a atom. We make mass number by total of both protons and neutrons.
How do you determine the number of neutron?
Protons = Atomic Number Electrons = Atomic Number Neutrons = Atomic Mass - Atomic Number *A note on Atomic Mass* Atomic Mass is the sum of the number of protons and neutrons in an atom. Every time you remove or add a Proton/Electron or a Neutron, you change the mass by one. *A note on Protons and Electrons* The number of Protons and Electrons in an atom is always the same. Whenever you talk about adding/removing a proton or an electron, you are by default adding/removing one of the other as well.
What is the mass number of the atom if the protons and electrons are both 29 and the neutron is 35?
This isotope is copper-64.
What is the mass of a proton is approximately equal to the mass of?
The mass of 12 protons is approximately equal to 12 atomic mass units.
How do you determine an atom's mass number?
mass number= no. of protons + no. of neutron
What is atomic mass A and neutron number N for given atom?
Atomic mass is the number of protons and neutrons that make up an atom. The neutron number is only the number of neutrons present in the atom. This can be found by subtracting the number of protons from the atomic mass.
The mass number of an atom is found by adding the?
protons and neutrons
The sum of the number of protons in the number of neutrons in and Atom is the what?
The number of protons plus the neutron number is called the atomic mass or "mass number".
Is the atomic number of an atom equal to its number of protons and the atomic mass is equal to its number of neutron Protons?
yes
What is the total number of protons and neutron's in an atom called?
mass number = protons + nuetrons
What is mass number if atom has 31proton 39neutrons 31electrons?
neutron plus protons = mass number cesium
What is mass number equal to?
The mass number of an atom is defined as the total number of protons and neutron (collectively called "nucleons") in the atomic nucleus. For example, a helium atom with 2 protons and 2 neutrons would have a mass number of 4.
What does the Mass number in chemistry represent?
the atomic mass incdicated the amount of protons and neutrons of the atom
What is the mass number of an atom with 11 protons 11 electron and 12 neutron?
The corresponding atom is sodium 23.
Which subatomic particle causes the mass number to change but has no effect on the identity of the element?
We make atomic number by number of protons in a atom. We make mass number by total of both protons and neutrons.
How does the mass number of an atom change when its nucleus absorbs a neutron?
Essentially the 3 basic parts to an atom are a Proton, Neutron and an Electron. Protons have a unit of mass and a positive charge Neutrons have a unit of mass and a neutral charge Electrons have no unit of mass and a negative charge. When a neutron breaks off from another atom it becomes a free radical that is then absorbed by the receiving atom because it would have a spare neutron space because the number of neutrons must be identical to the number of protons otherwise the atom will radioactivity decay. Essentially the mass number changes because the neutron has a mass.
