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12 neutrons has nothing to do with atomic number. Atomic number is the number of protons. You might mean sodium. Sodium has an atomic number of 11, and an Atomic Mass that rounds to 23, so 23 -11 = 12 neutrons in some isotopes of sodium. but some atoms of magnesium atomic number 12 also have 12 neutrons with a mass number of 24, and probably some other element, but those are all I can think of now.
What else can I help you with?
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.
What is the mass number of an atom that has 12 neutron and 11 protons?
The mass number would be 23 and the atomic number 11 making it sodium.
Does a neutron contribute to the atoms atomic number?
Nope, the atomic number is equal to the number of protons.
How would adding a neutron to an atom affect its atomic number?
Atomic number = Number of protons. So addition of neutron has no affect on the atomic number.Isotopes of the same element are formed by the change in neutrons.
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.
How do you calculate the number of neutron in the nucleus of an atom?
You calculate the number of neutron in the nucleus of an atom by : atomic mass - atomic number = neutron number. :) hope this helps
What is the formula to get a number atomic neutron?
No. of neutrons=Atomic mass - Atomic number
How to calculate neutron?
Atomic mass - Atomic number
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.
What element has the neutron number of 30.69?
This is the weighted average neutron number for the naturally occurring isotopes of nickel, which has the atomic number 28 and the gram-atomic mass of 58.69. In an individual isotope, the neutron number is always the isotopic atomic mass number minus the atomic number, and the same principle applies to the weighted average neutron number for the naturally occurring isotopes of an element.
What is the mass number of an atom that has 12 neutron and 11 protons?
The mass number would be 23 and the atomic number 11 making it sodium.
Does a neutron contribute to the atoms atomic number?
Nope, the atomic number is equal to the number of protons.
What is the number of charged protons neutron and electron in magnesium?
Each magnesium atom has 12 electrons and 12 protons (which are always charged), because magnesium has an atomic number of 12. In order to find the number of neutrons, the atomic mass number must be known. The number of neutrons can be determined by subtracting the number of protons from the atomic mass number.
How would adding a neutron to an atom affect its atomic number?
Atomic number = Number of protons. So addition of neutron has no affect on the atomic number.Isotopes of the same element are formed by the change in neutrons.
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 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.
How do you the get neutrons?
Neutrons in an atom Equation Atomic Weight - Atomic Number = The neutrons of an element Round for the final answer Example: Sodium (Na) Atomic Number: 11 Atomic Weight: 23 23-11= 12 neutrons so therefore sodium has 12 neutrons
