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Protons and neutrons make up most of the mass of an atom. Electrons weigh almost nothing by comparison.

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Mass of an atom is mainly due to nucleus?

Yes, the atomic weight of the protons and neutrons in an atom (the 2 particles that make up the nucleus) is 1 for each of them. The other particle in an atom is an electron. The atomic weight of an electron is 1/1840 so it is often considered negligible.


What are some characteristics of atom?

Some characteristics of a atom are they take on part of chemical reactions independently. Atom can be divided into sub-atomic particles and the main particles of a atom are the electron, proton and neutron.


What is the element with104 neutrons?

Lutetium (Lu) has 104 neutrons To find this number for any element, take the atomic number (lutetium is 71 on the periodic table) and the mass number of the element and subtract to find neutrons. The atomic number represents the number of Protons and electrons in an atom, the mass number can be found by rounding the atomic mass. If you subtract the # of protons from the total it will tell you how many particles , or neutrons, are left in the nucleus of the atom.. The atomic mass of Lu is 174.967 amu Therefore 175 (total particles) -71 (proton particles)= 104 Neutron particles.


Nitrogen has an atomic mass of 14 and an atomic number of 7 so the number of neutrons must be?

The atomic mass of an atom is the total mass of its particles. The atomic number is the number of protons in the atom's nucleus. To find the number of neutrons in an atom, we take its atomic mass (the total mass of its particles) and subtract its atomic number (the number of protons and electrons in the atom). A: Lithium has an atomic mass of 7 and an atomic number of 3 so the number of neutrons is equal to 4. (7 - 3 = 4)


What are some characteristics of ANS?

Some characteristics of a atom are they take on part of chemical reactions independently. Atom can be divided into sub-atomic particles and the main particles of a atom are the electron, proton and neutron.


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.


In the atom nearly all the mass is found in the what?

An atom is comprised of protons, neutrons, and electrons. The electrons take up the most space as they orbit the nucleus. But nearly all of the mass of the atom is found in the nucleus of the protons and neutrons.


What are the subatomic particles found in the nucleus of the atom are?

The three subatomic particles found in an atom are the Protons, Neutrons, and Electrons. But the subatomic particles found in the nucleus of an atom are the Protons, and Neutrons. The Electrons surround the nucleus and take up most of the volume.


Why do you say electrons most affect an atom's size while protons and neutrons most affect an atom's mass?

because the electron are on the out side and orbit around the nucleus (aka protons and neutrons) and take up the space


The formula of neutron?

The formula for a neutron is n. Neutrons are subatomic particles with no electrical charge and a mass slightly greater than that of a proton. They are found in the nucleus of an atom.


How many electrons does an atom has?

It depends on the atom you are reffering to, but to find the electrons take away the number of protons from the mass number of the atom.


How are solid particles and liquid particles alike?

they all take up space and all have matter, mass, and weight