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The three main sub-atomic particles of an atom are proton, neutron and electron. The mass of a proton is about 1800 times the mass of an electron and the masses of proton and neutron are almost similar.
Hence, mass of only proton and neutron is counted towards the mass of an atom.
What else can I help you with?
What is a positively central part of an atom?
In the nucleus of an atom, the positively charged particles are called Protons.
The mass of all particles of an atom added together is its what?
The sum of protons and neutrons in an atom is called mass number.
What are protons and neutrons called?
Protons and neutrons are collectively called nucleons, which are particles found in the nucleus of an atom. Nucleons are responsible for the majority of an atom's mass and exist alongside electrons in an atom.
Which particles in an atom contribute most to mass of the atom?
The particles are protons, neutrons, and the nucleus inside of the atom Nice helping u >_<
Which particles account for most of the atoms mass?
Physics has not managed to discover a particle that accounts for mass
Subatomic particles responsible for most of an atom's mass?
Protons and neutrons are subatomic particles that are responsible for most of an atom's mass. Protons have a positive charge, neutrons are neutral, and both are found in the nucleus of an atom. Electrons, which have a much smaller mass, orbit around the nucleus.
Which subatomic particles of an atom are responsible for atomic mass?
Protons and neutrons are responsible for the atomic mass of an atom. Protons have a positive charge, while neutrons have no charge. The combined mass of protons and neutrons makes up the majority of the mass of an atom.
Which two particles in the atom have the same mass?
No two subatomic particles have the exact same mass. The proton and the neutron, however, come close. Neutrons are heavier than protons by only 2.3 X 10-30 kg.
What is a positively central part of an atom?
In the nucleus of an atom, the positively charged particles are called Protons.
What are the positive part of a atom called?
Protons are positive and they are found in the nucleus.
What particles are used to determined the mass of an atom?
Mass of an atom = mass of protons + mass of neutrons
What is negatively charged particles of atoms with almost no mass called?
Negatively charged particles with almost no mass are called electrons. These subatomic particles orbit around the nucleus of an atom and are responsible for carrying electrical current and facilitating chemical reactions.
Which subatomic particles can be classified as nucleons?
Protons and neutrons are classified as nucleons because they are found within the atomic nucleus of an atom. They are both composed of smaller particles called quarks and are responsible for the majority of an atom's mass.
The mass of all particles of an atom added together is its what?
The sum of protons and neutrons in an atom is called mass number.
Which particles in a atom have a mass of 1?
protons and nuetrons
Which of the following particles is used to determine the mass of an atom?
Mass of an atom is determined by the no. of protons+ no. of neutrons in the atom.
What subatomic particles are responsible for the mass of oxygen?
Mass of oxygen or any atom is mostly tied up in the nucleus and largely attributed to neutrons and protons. A smaller amount of mass is contributed by electrons in orbitals outside the nucleus.
