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Where is most of the mass of an atom contain?
in the nucleus of an atom -proton and neutrons , electrons in the orbit has the negligible mass.
What is the mass number and what does it indicates?
The mass number of an atom is the sum of the numbers of protons and neutrons in the nucleus of the atom. It also indicates the total positive charge on the nucleus.
How much atomic mass does the nucleus contain?
This depends on the half-life of the atom
Where can the most mass be found in an atom?
Essentially all of the atom's mass is in the nucleus. In the lightest atom, that of hydrogen, it's about 99.95 percent. In the heaviest naturally occurring atom, that of Uranium238, it's about 99.979 percent.
What does the nucleus of an atom not contain?
The nucleus of an atom doesn't contain electrons, but it does contain protons and neutrons.
What total number is the mass number of an atom obtained by?
Add the Neutrons and Protons. The electrons are irrelevant in the mass number.
Total number of particles in the nucleus is called what?
There are two types of particles in the nucleus of an atom, which are the Protons and the Neutrons. The number of particles in the nucleus depends what is the element. For example, Oxygen has 8 protons and 8 neutrons in the nucleus and Phosphorus has 15 protons and 16 neutrons in the nucleus.
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.
Is An atom's atomic mass is the total mass of all of its electrons and protons?
No, an atom's atomic mass is the sum of the total number of protons and neutrons in its nucleus. Electrons have such a tiny mass that they are usually not included in the calculation of an atom's atomic mass.
Which of these makes up an atom's mass number?
The mass number of an atom is determined by the total number of protons and neutrons in the nucleus of the atom. It does not take into account the number of electrons, which are negligible in terms of contributing to the mass of an atom.
What is the total number of both the protons and the neutrons in the nucleus of an atom?
Mass Number
What is found with protons in the nucleus of an atom?
11
